Question

Peter is overweight. He is 105 kg. His aim is to lose 500 g per week. If he manages this, how many weeks will it be until he is 90 kg? weeks

Answer 1

Answer:

1 week -500g

2 week- 1 kg

105-90

15

15 . 2

30

There fore it takes 30weeks to reduce his weight to 90kg

Answer 2

30 weeks are required.

Given : Peter's current weight is 105 kg. And, he manages to lose 500 g per week.

To find : How many weeks will it be until he is 90 kg?

Solution :

We can simply solve this mathematical problem by using the following mathematical process. (our goal is to calculate the required number of weeks)

Here, we will be using normal arithmetic method.

Initial weight = 105kg

Final weight = 90 kg

So, decreased weight = Initial weight - Final weight = 105-90 = 15 kg

Now,

He loses 500g in = 1 week

He loses (2×500)g in = (2×1) weeks

He loses 1000g in = 2 weeks

He loses 1kg in = 2 weeks (As, 1 kg = 1000 g)

He loses 15kg in = (2×15) = 30 weeks

(This will be considered as the final result.)

Hence, 30 weeks are required.