Question

In a box some 5 cents coins, 10 cents coins and 25 cents coins are found in the ratio 4:5:7. If the total value of the sum is $24.50, then what is the number of
25 cent coins?​

Answer 1

Answer:

No. of 25 cents coins=70

Step-by-step explanation:

let the ratio be 4a:5a:7a

No. of 5 cent coins=4a

No. of 10 cent coins=5a

No. of 25 cent coins=7a

We know that $1=100 cents

Then,$24.50×100=2450cents

Since, total value of coin we have 2450cents

& 4a×5+5a×10+7a×25=2450

& 20a+50a+175a=2450

& 245a=2450

& 245a=2450

& a=10

Thus, the value of a=10

Hence,No. of 25 cents coins=7×10=70