Question

Value of the following pe
percentages.
20% of 155 pages​

Answer 1

Percentage solution with steps:

Step 1:

Our output value is 155.

Step 2:

We represent the unknown value with x.

Step 3:

From step 1 above,155=100%.

Step 4:

Similarly, x=20%.

Step 5:

This results in a pair of simple equations:

155=100%(1).

x=20%(2).

Step 6:

By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both equations have the same unit (%)

we have ;

= 155 / x

= 100 % / 20 %

Step 7:

Again, the reciprocal of both sides gives

x / 155 = 20 % / 100 %

X = 31

Therefore, 20% of 155 is 31