28 Feb 2026, 20:14 UTC145 views1 reactionsread 6 August 2026 Answer to Q222:
Solve for x: √(x+9) = x - 3
Answer:
Given √(x+9) = x - 3
Step 1: Square both sides
(√(𝑥 + 9))² = (𝑥 − 3)²
(𝑥 + 9) = (𝑥 − 3)²
Expand:
𝑥 + 9 = 𝑥² − 6𝑥 + 9
Step 2: Rearrange
Move everything to one side:
0 = 𝑥² − 6𝑥 + 9 − 𝑥 − 9
0 = 𝑥² − 7𝑥
Factor:
0 = 𝑥(𝑥 − 7)
Step 3: Solve
𝑥 = 0 or 𝑥 = 7
Answer: 0, 7
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28 Feb 2026, 20:02 UTC132 views1 reactionsread 6 August 2026 Answer to Q221:
What is (⁵⁄₄)⁻¹ + ½ ÷ ¾ ?
Answer:
Given:
(⁵⁄₄)⁻¹ + ½ ÷ ¾
Step 1: Solve the negative exponent
(⁵⁄₄)⁻¹
A power of ⁻¹ means take the reciprocal:
(⁵⁄₄)⁻¹ = ⅘
Step 2: Solve the division
½ ÷ ¾
Dividing by a fraction means multiply by its reciprocal:
½ ÷ ¾ = ½ × ⁴⁄₃
½ × ⁴⁄₃ = ⁴⁄₆ = ⅔
Step 3: Add the results
⅘ + ⅔
Find a common denominator (15):
(12 + 10) / 15 = ²²⁄₁₅ = 1⁷⁄₁₅
Answer = 1⁷⁄₁₅
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24 Feb 2026, 13:34 UTC154 views2 reactionsread 6 August 2026 Answer to Q200:
What is 8÷2(2+2)
Answer:
Many people get this question wrong because they misunderstand BODMAS.
What is BODMAS?
BODMAS stands for:
B – Brackets
O – Orders (powers/roots)
D – Division
M – Multiplication
A – Addition
S – Subtraction
But here’s the part people forget: Division and multiplication are equal in priority. Addition and subtraction are also equal in priority so when operations have equa…
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24 Feb 2026, 13:27 UTC121 viewsread 6 August 2026 Answer to Q219:
Three painters, A, B, and C, are painting a house.
Painter A can finish the house in 6 hours
Painter B can finish it in 8 hours
Painter C can finish it in 12 hours
If:
A and B start working together, but after 2 hours, A leaves.
Then B and C continue working together until the house is finished.
Question:
How long in total does it take to finish the house?
Answer:
Step 1: Work rates (per hour)
…
16 Feb 2026, 09:03 UTC157 views2 reactionsread 6 August 2026 Answer to Q218:
Five people need to cross a river at night:
Each person takes the following minutes to cross
Person A: 1 min
Person B: 2 min
Person C: 5 min
Person D: 10 min
Person E: 15 min
Rules:
1. The boat can carry at most 2 people.
2. They must carry a torch to cross. There’s only 1 torch, and someone must bring it back each time.
3. When two people cross, they move at the slower person’s speed.
Question:
W…
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15 Feb 2026, 15:17 UTC136 views4 reactionsread 6 August 2026 Answer to Q217:
A father says to his son:
“I am twice as old as you were when I was as old as you are now.”
If the father is 40 years old, how old is the son?
Answer:
This question is deliberately tricky. The option 20 is placed as bait. Many people see “40 years old” and “twice as old” and immediately think:
40 ÷ 2 = 20
But that ignores the tense in the statement. The words “is” and “were” are very important. …
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14 Feb 2026, 14:42 UTC136 views2 reactionsread 6 August 2026 Answer to Q216:
Three friends check into a hotel room costing £30. They each pay £10.
Later, the hotel realises there was a discount. The room should have cost £25, so the clerk gives £5 to the bellboy to return.
The bellboy, being sneaky, keeps £2 and gives each friend £1 back.
So now:
Each friend paid £9 (since they got £1 back)
£9 × 3 = £27
Bellboy kept £2
£27 + £2 = £29
Where did the missing £1 go since we …
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13 Feb 2026, 19:21 UTC150 viewsread 6 August 2026 Answer to Q215:
You flip 2 fair coins once.
What’s the probability of getting at least one head?
Answer:
When you flip 2 fair coins, the possible outcomes are:
HH
HT
TH
TT
We want the probability of at least one head.
The only outcome with no heads is: TT
All the other 3 outcomes (of 4 total) has at least one head = 3/4
13 Feb 2026, 19:17 UTC141 viewsread 6 August 2026 Answer to Q214:
A clock strikes once at 1 o’clock, twice at 2 o’clock, three times at 3 o’clock, and so on, striking twelve times at 12 o’clock.
How many times does the clock strike in one full day?
Answer:
First, count how many strikes happen in 12 hours:
1 + 2 + 3 + ... + 12
The sum of the first 12 numbers is:
(12×13) ÷ 2 = 78
So in 12 hours, the clock strikes 78 times.
Since a full day has two 12-hour cycl…
13 Feb 2026, 19:14 UTC140 viewsread 6 August 2026 Answer to Q213:
A number is increased by 20%, then decreased by 20%.
What is the final result compared to the original number?
Answer:
Let’s assume the original number is 100 (for simplicity).
Step 1: Increase by 20%
20% of 100 = 20
New number = 120
Step 2: Decrease by 20%
20% of 120 = 24
120 − 24 = 96
You end up with 96, compared to the original 100.
That means the final result is:
96 ÷ 100 = 0.96 = 96%
The…
13 Feb 2026, 19:08 UTC129 viewsread 6 August 2026 Answer to Q212:
An item is discounted by 50%, then discounted again by 50% of the new price.
What percentage of the original price do you end up paying?
Answer:
Let’s assume the original price is £100 (just to make it easy).
First 50% discount:
50% of £100 = £50
New price = £50
Second 50% discount:
50% of £50 = £25
New price = £25
So, you end up paying £25 out of £100, which is:
25 ÷ 100 = 0.25 = 25%
So, you…
13 Feb 2026, 19:03 UTC99 views1 reactionsread 6 August 2026 Answer to Q211:
In a room of 100 people, 99% are left-handed.
How many people must leave the room to reduce the percentage of left-handed people to 98%?
Answer:
Step 1: Current numbers
Total people = 100
Left-handed = 99% of 100 = 99
Right-handed = 1
Step 2:
We cannot remove the only right handed people because that will get the left handed people to 100%, so we have to remove from left handed people instead.
L…
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