Math, asked by anupambalkrishna, 4 months ago

1. if a car covers 54 km in an hour, how much distance will it cover in 40 minutes?

2. If 40 men can finish a piece of work in 60 days, in how many days will 75 men finish the same work?​

Answers

Answered by ravitavisen
5

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Answered by shreyash7121
0

1)=...per hour. What distance will it cover in 3 hours and 20 minutes?

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Atfirst we need to convert 3 hours 20 minutes into minutes i.e. 3×60+20 = 200 minutes

Now simply use the formula of time and distance…

Distance = speed × time

Speed = 54 km per hour i.e. 54 km in 60 minutes

Or in 1 minute 54/ 60 ( as we converted the unit in minutes )

Time = 200 minutes

Now Distance =

54/60 × 200

= 9× 20 ( cancelled out a single zero from 60 and 200 and dividing 54 by 6)

= 180 km

Ans: It will cover 180 km in 3 hours and 20 minutes.

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ANSWER

Suppose 40 men can do a piece of work in x days Then 30 men can do the same work in

30

x×40

days = (x + 6) days

⇒ 4x = 3x + 18 ⇒ x = 18 ∴ 60 men can do the same work in

60

18×40

days = 12 days

Answered By=shreyash ......

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