How much money do Vivek and Suman have together ?
Statements:
1. Suman has 20 rupees less than what Tarun has.
2. Vivek has 30 rupees more than what Tarun has.
Answer: D
From 1, we have: S = T - 20.
From 2, we have: V = T + 30.
Thus, from both 1 and 2, we have: V + S = (T + 30) + (T - 20) = (2 T + 10).
So, to get the required amount, we need to know the amount that Tarun has.