Question

Hamid has gained weight

He now weighs 88kg,which s 10% higher than a moth ago. How much did Hamid weigh a month ago?

Answer 1

To find Hamid's weight a month ago, the equation 88kg = 1.10 × w is used, which is derived from the fact that his current weight is 10% more than his previous weight. After solving for w, it is found that Hamid weighed 80kg a month ago.

Step-by-step explanation:

The subject of the question is to find out how much Hamid weighed a month ago if he currently weighs 88kg after gaining 10% in weight. To do this, we need to calculate the percent change in weight.

Let's denote Hamid's previous weight as w. According to the problem, his current weight is 10% more than his previous weight, which means:

88kg = w + (10/100) × w

This can be simplified to:

88kg = 1.10 × w

To find w, we solve for w by dividing both sides of the equation by 1.10:

w = 88kg / 1.10

Now we do the calculation:

w = 80kg

So, Hamid weighed 80kg a month ago.

Answer 2

Hamid was 79.2 kg a month ago.

Step-by-step explanation:

If he increased his weight by 10% and his weight is 88 kg so that means that last month he was 90% of his weight.

To find how much did Hamid increase in weight we have to turn the percentage into a decimal this is true for all percentages so 90/100= 0.9.

Next, we have to multiply the decimal with 88 so

0.9 × 88= 79.2 kg