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Unitary Method | Unitary Method Exercise 9C

Question 8

8 men can finish a piece of work in 40 days. If 2 more men join them, the work will be completed in

(a)30 days (b)32 days (c)36 days (d)25 days

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Solution:-

(b)32 days

Because

8 men can finish a piece of work in = 40 days

1 man can finish a piece of work in = (8 × 40)

If 2 more men join them, i.e. 10 men can finish a work in = (8 × 40) / 10

= 32 days

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Our top 5% students will be awarded a special scholarship to Lido.

subject-cta

Question 8

8 men can finish a piece of work in 40 days. If 2 more men join them, the work will be completed in

(a)30 days (b)32 days (c)36 days (d)25 days

Looking to do well in your science exam ? Learn from an expert tutor. Book a free class!

Solution:-

(b)32 days

Because

8 men can finish a piece of work in = 40 days

1 man can finish a piece of work in = (8 × 40)

If 2 more men join them, i.e. 10 men can finish a work in = (8 × 40) / 10

= 32 days

Our top 5% students will be awarded a special scholarship to Lido.

subject-cta
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