<PRE><B>Question 689310</B>
The earning of three stalls, P,Q,R in a market are in the ratios ; P:Q = 3:4 and P:R = 5:6. Find the ratio of earnings of stall Q to stall R
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P/Q = 3/4
P = 3Q/4
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P/R = 5/6
P = 5R/6
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3Q/4 = 5R/6
18Q = 20R
Q/R = 20/18 = 10/9
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