Advanced Math/Maths Problem
Krishnan had 64 coins in his coin box.There were 20-cent coins and 50-cent coins. The total value of all coins was $18.50. How many 20-cent coins and how many 50 cent coins were there?
I am really not sure how to divide the coins between the 20 and 50 cents. Kindly advice.
This is a simple algebra question. Let T be the number of 20 cent coins and F the number of 50 cent coins. Since there are 64 coins you know:
Since the total value is $18.50 you know:
20T + 50F =1850
Now just solve the 1st and plug into the 2nd, so T=64-F and:
Then solve for F, and hence T