Question

The length and breadth of a class room are in the ratio 3:5. If the breadth of the room is 20 m, find the length​

Answer 1

Answer:

12 cm

Step-by-step explanation:

length:breadth=3:5

:5=20

:1=4

:3=12

then length of class room is 12 cm answer

Answer 2

Answer:

12m

Step-by-step explanation:

the length and breadth are in the ratio 3:5

So; length = 3x, breadth = 5x

Given That:

Breadth of the room = 20m

Thus, 5x = 20

x = 20/5

x = 4

Now the length can be calculated:

3x = 3 x 4

= 12m

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