Mathematics
NULL
Medium
Question
P, Q and R together earn Rs.1620 in 9 days. P and R earn Rs.600 in 5 days; Q and R earn Rs.910 in 7 days. How much does R earn per day?
A
Rs.40
B
Rs.70
✓ Official correct answer
C
Rs.90
D
Rs.100
Community credibility
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A
Rs.40
No member explanations yet for this option.
B
Rs.70
No member explanations yet for this option.
C
Rs.90
No member explanations yet for this option.
D
Rs.100
No member explanations yet for this option.
Explanation
Daily: P+Q+R = 180, P+R = 120 ⇒ Q = 60. Q+R = 130 ⇒ R = Rs.70.