I came across this problem and can't seem to figure out the solution.
The options are
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879
978
798
2026-04-01 02:02:50.1775008970
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.
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1
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.