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August 1, 2015

Homework Help: math

Posted by katie on Wednesday, November 29, 2006 at 2:53pm.

a childs bank contains $6.30 in dimes and quarters. there are twice as many dimes as quarters. how many of each kind of coin are in the bank?

let d = #dimes and q=#quarters.
The total is worth $6.30.
eqn 1 is 0.10*d + 0.25*q=$6.30
eqn 2 is 2*#quarters = #dimes or
2q=d.
Two equatins and two unknowns. Solve for q and d.
Post your work if you get stuck.

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