Question
Pooja used to solve 36 problems in 72 minutes. After her
efficiency decreased by 33.33%, how long will she now take to solve the same number of problems?Solution
ATQ,
72 minutes
Initial efficiency = 72 ÷ 36 = 2 minutes/problem
New efficiency = 72 ÷ (36 × 0.6667) = 3 minutes/problem
Time to solve 36 problems = 3 × 36 = 108 minutes
Alternate Solution:
Efficiency ratio = 0.6667:1 = 2:3
Time ratio = 3:2
Required time = 72 × (3/2) = 108 minutes
More Time and work Questions
- Which letter and number cluster will replace the question mark (?) to complete the given series?
LT6, KU12, IW24, FZ48, ____ - A series is given with one term missing. Choose the correct alternatives from the given ones that will complete the series.
57, 59, 56, 61, 54, ___ - Which letter-cluster will replace the question mark (?) in the following series?
RGV, UME, ?, AYW, DEF - Select the number from among the given options that can replace the question mark (?) in the following series.
17, 18, 22, 31, 47, ___ - Which letter-cluster will replace the question mark (?) in the following series?
NPQR, OORQ, PNSP, ____, RLUN
Relevant for Exams:
