Question

cost of a road of length 2m 50cm is rs500 .Than find the cost of road is length 7m 50cm​

Answer 1

☞☞☞Answer ☜☜☜

☆ Given :

Cost of a paving road of length 2m 50cm is Rs 500 .

Similarly ;

The length of the road = 7m 50cm

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♧ Required to find :

1. Cost of paving the road of length 7m 50cm?

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✐Units conversion :

Before solving this question we need to convert some unit to another units in order to solve this problem .

First; Convert the length of road into meters properly.

Given ;

Length of the road = 2m 50cm

Here; convert this 50 centimetres into meters

To convert centimetres into meters we have to use an formula.

$\boxed{\longrightarrow{\boxed{\large{1\:centimeter\:=\: \frac {1}{100}meters}}}}$

So,

50 centimetres = ? meters

==> 50/100

==> 0.5 meters

Now add this to the remaining length.

we get;

2 + 0.5 = 2.5 meters .

Similarly; convert the length of the road into meters.

Given measurements ;

Length of the road = 7m 50cm

Here; convert the 50 cm into meters

From the above we can conclude that 50cm = 0.5 meters .

Hence ;

The actual converted measurement is 7 + 0.5 = 7.5 meters .

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✎ Explanation :

In the question; it is given that

The cost of paving road of length 2.5 meters is Rs 500 .

So;

using this statement we have to find the cost of paving road for square meter .

For that ;

we have to divide the cost of the paving by length of the road .

Hence;

We can know the cost of paving for 1 meter square .

Now multiply this cost with length of the road for which we need to find the cost .

Hence ; The result is the cost of paving 7.5 meters .

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◇ Solution :

length of the road = 2.5 meters

Cost of paving road of 2.5 meters is Rs 500 .

Hence ;

Cost of paving road for 1 square meter is

cost of the paving / length of the road

==> 500 / 2.5

==> 200 rupees

Hence;

Cost of paving road for 1 square meter is Rs 200

Therefore;

Cost of paving road of length 7.5 meters is

Length × cost of paving road for 1 square meter

==> 7.5 × 200

==> 1,500 rupees

$\boxed{\longrightarrow{\boxed{Cost\:of\:paving\:road\:of\:Length\:=\:1,500\:rupees}}}$

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