Question

Five years ago, Tom had a mass of 56 kg.His mass is 63 kg now. Find the percentage increased in his mass.​​​​

Answer 1

Tom's initial mass was 56 kg, and his current mass is 63 kg. The increase in his mass is therefore:

```
Δm = 63 kg - 56 kg = 7 kg
```

To find the percentage increase, we can use the formula:

```
% increase = (Δm / initial mass) x 100%
```

Plugging in the values we get:

```
% increase = (7 kg / 56 kg) x 100% = 12.5%
```

Therefore, Tom's mass has increased by 12.5%.