Nikhil is thrice as efficient as Kanak and can finish an assignment in 6 days less than Kanak. How many days Kanak will take to finish the same assignment?
1). 4 days
2). 7 days
3). 9 days
4). 11 days
Efficiency of Nikhil : Efficiency of Kanak = 3 : 1
Nikhil will take 1/3 time as compared to Sunita
Let us assume Kanak will take 3x days to complete an assignment and Nikhil will take x days.
⇒ 3x - x = 6
⇒ x = 3
∴ Kanak will take 3 × 3 = 9 days1. Find the value of the expression [{[(20 ÷ 2) + (15 ÷ 3)] + (50 – 20)} ÷ (6 + 3)] + (12 × 2) = ?
2. What should come in place of question mark ‘?’ in the following number series? 26, 144, 590, 1164, ?
8. What should come in place of question mark ‘?’ in the following number series? 12, 27, ?, 75, 108