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jek_recluse [69]
4 years ago
10

A water wheel makes 28 revolutions in 90 seconds. how many revolutions can it make in 4 minutes?

Mathematics
2 answers:
ioda4 years ago
7 0
90 seconds = 1.5 minutes
1.5 minutes = 28 revolutions
Revolutions in 1 minute = 28/1.5 = 18.67 revolutions

Revolutions in 4 minutes = 18.67*4 
                                        = 74.7 (approx.) revolutions
IceJOKER [234]4 years ago
6 0

Answer:

Step-by-step explanation:

Alright, lets get started.

A water wheel makes revolutions 28 in 90 seconds.

We are asked to find number of revolutions in 4 minutes.

lets make 4 minutes into seconds

4 minutes = 4*60=240 seconds

In 90 seconds, the revolutions are = 28

So, in 1 second, the revolutions are = \frac{28}{90}

So, in 240 seconds, the revolutions are  = \frac{28}{90}*240

So the revolutions are = 74.67 revolutions

It means, in 4 minutes, the numbers of revolutions are 74.67 .  :  Answer

Hope it will help :)

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The sparky valley barbershop quartet made appearances in Quakertown and Doleystown. The hotel charge before taxes in Doleystown
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The hotel at Qakertown charged $5000 before tax while the hotel at Doleystown charged $5,500 before tax

Step-by-step explanation:

In this question, we have a musical band that visited two different towns which hotel charge different amounts at different tax rate. We are now given the total amount in taxes and now asked to calculate what is charged in each of the towns.

Let’s proceed!

Since we do not know the amount charged in each of the towns, let the amount charged at the hotel at Quakertown be $x and the amount charged at the hotel at Doleytown be $y.

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y = 500 + x •••••••••••••••(I)

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