Nazir can wash his car 15 minutes while his son takes twice as long. If they work together how many minutes will the job take them?

Created: 6 years ago | Updated: 2 years ago

Updated: 2 years ago

Bank Alfalah Ltd Bank Alfalah Ltd- MTOs Recruitment Test - 2005 গণিত

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Best Ans:

His son can wash the car in (15 × 2 = 30) minutes

Nazir can wash 1/15 part of the car in 1 minute

His son can wash 1/30 part of the can in 1 minute

Together they can wash (1/15 + 1/30 = 1/10) part of the car in 1 minute

So, together they can wash the whole car in 10 minutes.

6 years ago

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Md Azizur Rahman

Founder of Satt

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