Question
Two men A and B started a job in which A was thrice as
good as B and therefore took 60 days less than B to finish the job. How many days will they take to finish the job, if they start working together?Solution
A B Efficiency 3 : 1 Time 1 : 3 Difference in time = 60 days ⇒ 3x - x = 60 ⇒ x = 30 days So, Total Work = 30 × 3 = 90 A and B can do work together in days = 90/4 = 22.5 days ∴ The required answer is 22.5 days.
Select the number from among the given option that can replace the question mark (?) in the following series.
4, 21, 86, 261, 526, ?
Find the missing number.
Find the missing number.
Select the missing number from the given alternatives:
Study the given matric carefully and select the number from among the given options that can replace the question mark (?) in it.
What will come in the place of question mark?
Find the missing term:
What number should replace the question mark?
Select the missing number from the given responses.
Choose the correct alternative that will complete the given number series. 2, 9, 28, 65, ?, 217
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