Question

David has 21 coins in his piggy bank, all of which either dimes or quarters. If David has 4.20, how many coins does he have of each

Answer 1

Step-by-step explanation:

14 quarters and 7 dimes

1 quarter= 0.25

1 dime=0.10

14 quarters=14×0.25=3.50

7 dimes=7×0.10=0.70

as, (14+7)=21

and (3.50+0.70)= 4.20