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OpenStudy (pokemon23):
anyone on in math willing to help me in my math hw? @Mathematics
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OpenStudy (anonymous):
sure
OpenStudy (pokemon23):
kk
OpenStudy (mimi_x3):
Hm..it depends on the topic :P
OpenStudy (pokemon23):
Bill has 4 times as many quarters as dimes.In all he has $2.20. How many coins of each type does he have?
OpenStudy (pokemon23):
what's the equation?
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OpenStudy (pokemon23):
Zarkon can you help me?
OpenStudy (zarkon):
D= dimes Q=quarters Q=4*D .25*Q+.1*D=2.20 .25(4D)+.1*D=2.20 solve for D
OpenStudy (zarkon):
I get 2 dimes and 8 quarters
OpenStudy (zarkon):
.25(4D)+.1*D=2.20 multiply by 100 25(4D)+10D=220 100D+10D=220 110D=220 D=2 Q=4D Q=4(2)=8
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