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
best des
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.
Md Azizur Rahman
Founder of Satt
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