Question
Three people- Paul, Sara, and John-want to put their money together to buy a $90 radio. If Sara agrees to pay twice as much as John, and Paul agrees to pay three times as much as Sara, how much must Sara pay?
Answers
PsyDAG
J = 1/2S
P = 3S
S + P + J = S + 3S + 1/2S = 90
Solve for S.
P = 3S
S + P + J = S + 3S + 1/2S = 90
Solve for S.