Question

Arun weighs 30 kg and is gaining 1.5 kg every month
Raja weighs 39kg and is gaining 0.75kg every month. How many months will it take for Arun to weigh same as Raja? ​

Answer 1

Hi dood,

Arun weight =30 kg,

gaining 1.5 kg every month.

Raja weight 39 kg ,

gaining 0.7 kg every month.

LCM of 30 and 31

is 930 kg

1.5 into 930=1395

0.7 into 930=651

time taken to same as Raja,

1395-651=744 days

in month's

744/31=24months answer

mark me brain list ok

Answer 2

Answer:

12 months

Step-by-step explanation:

Let in x months Arun will weigh same as Raja.

now, Arun gains 1.5 kg every month. so, after x months he will gain total weigh 1.5x kg

and, Raja will gain 0.75x kg similarly.

so, after x months Arun's age will be 30+1.5x

and, Raja's age will be 39+0.75x

now, according to the question after x months

30+1.5x=39+0.75x

1.5x-0.75x=39-30

0.75x=9

x=9/0.75

x=12