Question

Two people A and B weigh 50 kg and 60 kg respectively. If, each month, A gains 20% of their weight in the previous month and B gains 30% of their weight in the previous month, what will be the difference in their weights after 3 months?​

Answer 1

Answer:

45.42 kg

Step-by-step explanation:

Two people A and B weigh 50 kg and 60 kg respectively. If, each month, A gains 20% of their weight in the previous month and B gains 30% of their weight in the previous month, what will be the difference in their weights after 3 months?

Weight of A = 50 kg

Weight of A after 1 month = 50 + (20/100)50 = 60 kg

Weight of A after 2 month = 60 + (20/100)60 = 72 kg

Weight of A after 3 month = 72 + (20/100)72 =  86.4 kg

Weight of B after 1 month = 60 + (30/100)60 = 78 kg

Weight of B after 2 month = 78 + (30/100)78 = 101.4 kg

Weight of B after 1 month = 101.4 + (30/100)101.4 = 131.82 kg

Difference = 131.82 - 86.4  = 45.42 kg