Total of Arun’s marks in Sanskrit and Mathematics together are 80 more than his marks in Science. His average marks in the three subjects are 100. What are his marks in Science?

A. 80 B. 110 C. 120 D. Data inadequate Answer: Option B

Solution(By Apex Team)

$\begin{array}{l}\text{S + M + Sc = 100 × 3 = 300}\\ \text{And}\\ \text{S + M = Sc + 80}\\ \text{⇒ Sc + 80 + Sc = 300}\\ \text{⇒ 2Sc = 220}\\ \text{⇒ Sc = 110}\end{array}$

A. 20
B. 21
C. 28
D. 32

A. 18
B. 20
C. 24
D. 30

A. 10 years
B. 10.5 years
C. 11 years
D. 12 years