Question

PLEASE ANSWER QUICKLY PLEASE JUST DON'T TAKE MY POINTS IF YOU DON'T KNOW THE ANSWER
Olivia uses the work below to determine 55% of 720. Step 1: 55 percent = 50 percent + 10 percent minus one-half (10 percent) Step 2: 50% of 720 = 720 divided by 2 = 360 10% of 720 = 720 divided by 10 = 72 One-half (10 percent of 720) = One-half (72) = 31 Step 3: 360 + 72 – 31 = 401 Which explains the error in Olivia’s solution? Step 1: Olivia used percents that are not equivalent to 55%. Step 2: Olivia incorrectly determined 50% of 720. Step 2: Olivia incorrectly determined One-half of 10% of 720. Step 3: Olivia subtracted One-half of 10% when she should have added.

Answer 1

Answer:

it's step (3) Olivia incorrectly determined one-half of 10% of 720

Step-by-step explanation:

one-half of 72 should be 36 instead of 31

hope it helps

Answer 2

Here, Step2 is incorrect because 1/2of 72 not equals to 31