Question

Express the following in the form of ratio:
(a) The length of rectangle is double of its breadth.
(b) For preparing tea, 3 cups of water require 1 cup of milk

Answer 1

Answer:

Answer will be as follows

a) 2:1

b) 3:1

Answer 2

Step-by-step explanation:

(a) Let the breadth of the rectangle is b cm.

So, the length of the rectangle is 2b cm.

We know that the perimeter of rectangle is

=2(l+b)

Since, perimeter of rectangle is 120 cm.

Therefore,

6b=120

b=20 cm

And l=40 cm

So, the area of rectangle is

=20×40=800 cm2

Hence, the length is 40 cm, breadth is 20 cm and area is 800 cm2.

(b) For preparing tea, 3 cups of water require 1 cup of milk. In a school, the work load of teaching four classes has been assigned to six teachers. A hotel has 30 liters of milk. 15 ml of milk is required to prepare a cup of tea.