Question

Elise is working out 20% of 600 kg.

÷
She types 600 20 into her
calculator.
Elise writes down the answer: 30 kg
What is Elise's mistake?

Answer 1

Answer: She divided it by 2 which is incorrect, instead she should multiply 20% by 600kg to get 20% of 600

`(20)/(100)` x 600 (the answer will be 120kg)

Answer 2

Think of 20% as 20/100 = 0.20

Then we multiply, not divide, this value with 600

0.20*600 = 120 is the answer.