A bag contains one dollar, 50 cents and 25 cents coins in the ratio 5:6:8. If the total amount is 420 dollars, find the total number of coins.

Question

I came across this problem and can't seem to figure out the solution.

The options are

789

879

978

798

score 2 · Accepted Answer · answered Sep 17 '16 at 12:39

2

Suppose that there are $8A$ 25 cents; $6A$ 50 cents; $5A$ dollar. So you will have $$5A + 3A+ 2A=420.$$

Then $A=?$ and the total number of coins is evident.

answered Sep 17 '16 at 12:39

Paul

What is the number then? – ibuprofen Sep 17 '16 at 12:50
@LinuxGeek your question looks pretty much like a standard homework assignment, so the least you could do is solve this very easy equation that Paul gave you. – Hirshy Sep 17 '16 at 12:53
I did and I get A as 42 – ibuprofen Sep 17 '16 at 12:54
If $A=42$, how many dollar coins are there? – B. Goddard Sep 17 '16 at 13:51
42 dollars right – ibuprofen Sep 17 '16 at 14:47
B. Goddard didnt you see the options? – ibuprofen Sep 17 '16 at 14:49
@LinuxGeek: No, if $A=42$ there are $5A=210$ dollar coins. – Brian M. Scott Sep 17 '16 at 20:51
@BrianM.Scott Thanx I got it ! It was 798. – ibuprofen Sep 18 '16 at 16:58
@LinuxGeek: It was indeed. – Brian M. Scott Sep 18 '16 at 18:03

1 Answers1