Question

1. 4 men can make 4 cupboards in 4 days; how many cupboards can 14 men make in 14 days?
2. In a hostel it costs 1800 to keep 50 students for 8 weeks. For what length of time did the cost of keeping
90 students amount to * 21,060?
3. 39 persons can repair a road in 12 days working 5 hours per day. In how many days will 30 persons
working 6 hours per day complete the work?

pls help me out
I want step by step explanation ...

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Answer 1

Answer:

1) Since 4 men can make 4 cupboards in 4 days, four men will be able to make 1 cupboard in 1 day. We can now say that one man will be able to make a quarter (i.e. 1/4) cupboard in one day.

Hence 14 men will be able to make 1/4 x We can safely say that 14 men will be able to make 1/4 x 14 x 14 cupboards in 14 days.

14 cupboards in 1 day.

Solving this we get 49.

So our answer is 49 cupboards.

2) The hostel cost for 50 children for 8

weeks = rs.1800.

The hostel cost for 1 child for 8 weeks

1800/50

The hostel cost for 1 child for 1 week =

1800/50 x 8

So, the hostel cost for 90 children for 1

week = (1800 x 90)/(50 x 8)

The cost of keeping 90 children for x

number of weeks = Rs. 21060

Thus,

(1800 x 90 x x)/(50 x 8) = 21060

= x = (21060 x 50 × 8)/(1800 x 90)

x= 8424000/162000

x = 52

So, the answer is 52 weeks.

3) 39 people can do work in 12 days for 5

hrs

1person can do work in( 39x12 ×5) days

for an hour

30 people can do work in {(39x12×5):30}

days 30 people can do work in 13 days for 6

hrs

mark me brainliest