Multiple choice

Anand earns Rs $80$ in $7$ hours and Pramod earns Rs $90$ in $12$ hours. The ratio of their earnings is

  1. $21 : 32$
  2. $80 : 90$
  3. $32 : 21$
  4. $7:12$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Anand's rate = 80/7 per hour. Pramod's rate = 90/12 = 7.5 per hour. Ratio = (80/7) : 7.5 = 80 : 52.5 = 160 : 105 = 32 : 21.

AI explanation

To compare their earnings, we first find their respective rates per hour by dividing their total earnings by the hours worked. Anand earns 80/7 rupees per hour, while Pramod earns 90/12 or 15/2 rupees per hour. The ratio of their earnings is then (80/7) divided by (15/2), which equals 160/105 and simplifies to 32:21. The ratio of their earnings is 32 : 21.

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