Question

The price of petrol has risen from ₹ 80 to ₹ 84 a litre. By what per cent has the price risen up?​

Answer 1

by 4.77 percent has the price risen up

Step-by-step explanation:

GIVEN

Total Value = ₹84

Part Value = ₹80

___________________________

TO FIND

By what percent has the price risen up

___________________________

We know that,

Percent = Part Value / Total Value × 100

Percent = 80 / 84 × 100

Percent = 0.9523 × 100

Percent = 95.23

Percent = 95.23%

Now

Let's find price risen up percent

Percent = 100% - 95.23%

Percent = 4.77

Percent = 4.77%

by 4.77 percent has the price risen up

___________________________

Important

If part value and total value is given and we need to find percent

Then,

Percent = Part Value / Total Value × 100

If percent and total value is given and we need to find part value

Then,

Part Value = Percent × Total Value / 100

If percent and part value is given and we need to find part value

Then,

Total Value = Part Value / Percent × 100

Answer 2

Step-by-step explanation:

$\huge\sf\underline\blue{answer:}$

$\huge\sf\underline\purple{given,}$

The price of petrol has risen from ₹ 80 to ₹ 84 a litre. is

$\huge\sf\underline\pink{to find}$

By what per cent has the price risen up?

$\huge\fcolorbox{black}{pink}{solution}$

percent in the price that has been rise up =

=80/84×100

= 0.9523×100

= 95.23%

difference in the percentage= 100%-95.23%

= 4.77%

$\huge\fcolorbox{black}{pink}{://hence solved}$