Multiple choice

S can finish 50% of a work in a day. T can do 25% of the work in a day. Both of them together will finish the work in _______days.

  1. 2.66

  2. 2.33

  3. 1.33

  4. 1.67
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

S does 0.5 work/day and T does 0.25 work/day. Together they do 0.75 work/day. Time = 1 / 0.75 = 4/3 = 1.33 days.

AI explanation

Since S finishes 50% of the work in a day, S's work rate is 1/2. T finishes 25% of the work in a day, making T's work rate 1/4. Their combined one-day work using the sum of work rates is 1/2 + 1/4 = 3/4 of the job. The total time to finish the work is the reciprocal of their combined rate, which is 4/3 days. This equals 1.33 days.

Keep practicing — related questions