Assessment
Exam
Numerical Ability
Averages
In a class test , the average mark of Leena and Meena is 80. The average of Meena and Reena is 85 years and the average of Leena and Reena is 90. Find Meena's mark.
A. 95 B. 85 C. 82.5 D. 75
Read Solution (Total 2)
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- D. 75
L + M = 2*80 =160 ---(i)
M + R = 2*85 =170 ---(ii)
L + R = 2*90 =180 ---(iii)
On solving (i), (ii) & (iii), L=85, R=95, M=75 - 7 years agoHelpfull: Yes(0) No(0)
- L + M = 2*80 =160 ---(i)
M + R = 2*85 =170 ---(ii)
L + R = 2*90 =180 ---(iii)
Meena marks = (i - iii +ii)/2 - 6 years agoHelpfull: Yes(0) No(0)
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