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Reema, Ruchi, and Richa can make a painting in15, 20 and 30 days, respectively. They undertake to make a painting for ₹810. The share of Reema exceeds that of Ruchi by - Mathematics

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MCQ

Reema, Ruchi, and Richa can make a painting in 15, 20 and 30 days, respectively. They undertake to make a painting for ₹ 810. The share of Reema exceeds that of Ruchi by

Options

  • ₹ 91

  • ₹ 92

  • ₹ 90

  • ₹ 89 

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Solution

₹ 90
Explanation:
Here, Reema, Ruchi, and Richa can make a painting in 15, 20 and 30 days, respectively

So, the efficiency of Reema, Ruchi and Richa = 4 : 3:  2

∴ Share of Reema =`810/9xx4=360`

Share of Ruchi =`810/9xx3=270`

∴ The share of Reema exceeds that of Ruchi by
= (360 − 270)= ₹ 90

Concept: Number System (Entrance Exam)
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