Dear sir,

In 9.1 exercise question no. 1 and 2. Instead of finding the value of x and substituting to find the value. We can directly substitute x and y value of ratio and evaluate. Is this method wrong?

Find the following percentage value:

1) 15% of 250.

Find the perimeter of the given figure

Find the perimeter of the given figure

Find the angle which is equal to its supplement.

Find the breadth of the rectangle whose length is 70 cm and perimeter 200 cm.

Convert 1 gallon into liters.

a. 3.05 liters

b. 3.78 liters

c. 4.05 liters

d. 4.78 liters