Multiple choice

The salaries of A, B and C are in the ratio 4 : 5 : 6. If increments of 25%, 5% and 25% are respectively allowed and salary of B is Rs. 21000 after increment, then find the sum of the salaries of A, B and C after increment.

  1. Rs. 71000

  2. Rs. 72000

  3. Rs. 75000

  4. Rs. 74000

  5. Rs. 73000
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A Correct answer
AI explanation

Let the initial salaries be 4x, 5x and 6x; after increments of 25%, 5% and 25%, the new salaries become 5x, 5.25x and 7.5x. Since B's salary after increment is Rs. 21000, we have 5.25x = 21000, which means x = 4000. Multiplying this by the new ratios gives the sum of the salaries as 5(4000) + 5.25(4000) + 7.5(4000) = 20000 + 21000 + 30000 = Rs. 71000.

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