Multiple choice

A can do a piece of work in 8 days while B alone can do it in 12 days. They work together for 4 days and the remaining work is completed by C alone in 2 days. They are paid Rs 7,200 for the completion of the entire work. The earnings of A, B and C, respectively, are:

  1. Rs 2400, Rs 2400 Rs 2400

  2. Rs 4000, Rs 2400 Rs 800

  3. Rs 3600, Rs 2400 Rs 1200

  4. Rs 3000, Rs 3000 Rs 1200
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Payment is divided in proportion to work done. A did 4/8 = 1/2 of work, B did 4/12 = 1/3, and C did 1/6 (2 days at 1/12 per day). Ratio is 3:2:1. Dividing Rs 7200 gives Rs 3600, Rs 2400, Rs 1200.

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