A boxer needs to lose 3 1/2 in a month to be able to compete as a flyweight. In three weeks, he lowers his weight from 55.5 kg to 53.8 kg. How many kilograms must the boxer lose in the final week to be able to compete as a flyweight?

1.8kg

55.5-53.8= 1.7 in the first weeks

3.5- 1.7= 1.8 for final week

The boxer lose 1.8 kg in the final week to get able to compete as a flyweight.

Step-by-step explanation:

Since we have given that

Quantity of weight a boxer needs to lose in a month is given by

3 1/2 kg

= 7/2 kg = 3.5 kg

In 3 months, he lowers his weight from 55.5 kg to 53.8 kg.

So, Quantity of weight he lose in three months is given by

55.5 - 53.8

= 1.7 kg

Number of kilograms the boxer lose in the final week to be able to compete as a flyweight is given by

3.5 - 1.7

= 1.8 kg

Hence, the boxer lose 1.8 kg in the final week to get able to compete as a flyweight.

Hope this help you! :)