Question
PSLE
Fred, Tommy and Billy shared the cost of a present. The ratio of Fred's share to the total share of Tommy and Billy was 1 : 3. The ratio of Tommy's share to the total share of Fred and Billy was 1 : 7. Billy's share was $30 more than Fred's share. How much did the present cost?
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PSLE
Fred, Tommy and Billy shared the cost of a present. The ratio of Fred's share to the total share of Tommy and Billy was 1 : 3. The ratio of Tommy's share to the total share of Fred and Billy was 1 : 7. Billy's share was $30 more than Fred's share. How much did the present cost?