We use the BODMAS method to solve the given questions.
Solve the Bracket then Divide Multiply Add and Subtract
1. 32÷4×(16×1/2) - 2
= 32÷4 × ( 8 ) - 2
= 8 × 8 - 2 = 64 - 2 = 62
2. 20 ÷ (5×2/5) + 3
= 20 ÷ (2) + 3 = 20 ÷ 2 + 3
= 10 + 3 = 13
3. 1/2 ×(6×4) ÷ 3 + 2
= 1/2 × 24 ÷ 3 + 2
= 1/2 × 8 + 2
= 4 + 2 = 6
4. 2 (6÷2+8) - 4
= 2 (3+8) - 4
= 2 × 11 - 4
= 22 - 4
= 18
Answer:
I believe the answer is None Of These.
Multiply the decimal version of the percent by the total number of hours in a day (24). For example, 26% of the day is 0.26 * 24 = 6.24 hours.
88 seconds.
You are calculating a 20% decrease. This means you need to calculate 20% of 110.
First, calculate 10%, which is much easier. To do this, divide 110 by 10 (because you’re going from 100% to 10%, which is a division by 10, so you need to do the same to the 110)
110/10 = 11
However, now you need to get from 10% to 20%, so multiply by 2.
20% = 22
HOWEVER, YOU’RE NOT DONE HERE.
I know too many people who make the mistake in an exam of stopping here, myself included.
You’re working out a decrease! This is only the amount it has decreased by, not the final time.
To calculate the final time, you need to minus our value from the average.
So, 110-22 = 88
Therefore, it takes cashier A 88 seconds!
Hope this helps :)
