Ratio and Proportion - Quantitative Aptitude (MCQ) questions for Q. 21142

Q.  It was intended that Rs. 585 be divided among P, Q and R in the ratio of 4 : 3 : 2, but by mistake the distribution was made in the proportion of 1/4 : 1/3 : 1/2. How much does 'R' gain by the error ?
- Published on 22 Apr 16

a. Rs. 99
b. Rs. 126
c. Rs. 140
d. Rs. 152
e. None of these

ANSWER: Rs. 140
 
Total amount = Rs. 585
on dividing it in the ratio of 4 : 3 : 2
Share of P = 4/9 * 585 = Rs. 260
Share of Q = 3/9 * 585 = Rs. 195
Share of R = 2/9 * 585 = Rs. 130
But the amount has been divided in the proportion of 1/4 : 1/3 : 1/2 i.e. 3 : 4 : 6
Share of P = 3/13 * 585 = Rs. 135
Share of Q = 4/13 * 585 = Rs. 180
Share of R = 6/13 * 585 = Rs. 270
Therefore, gain for R by virtue of error = Rs. 270 – Rs. 130 = Rs. 140

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