Question

The perimeter of a rectangular pool is 100 m and its length is 30 m. Find its breadth.

If 16 bicycles cost Rs 17,600, how much will 9 bicycle cost?


please tell me the answer ​

Answer 1

Step-by-step explanation:

Given:-

Perimeter =100m

length=30m

To find:-

breadth

Solution:-

Let the breadth =x

as we know that in a rectangle

${:}\longrightarrow$${\boxed{Perimeter=2 (l+b)}}$

${:}\longrightarrow$$100=2 (30+x)$

${:}\longrightarrow$$30+x={\frac {100}{2}}$

${:}\longrightarrow$$30+x=50$

${:}\longrightarrow$$x=50-30=20m$

${:}\longrightarrow$${\underline{\boxed{\bf {Breadth=20m}}}}$

2.

Given:-

16 bicycle cost=Rs 17,600

To find:-

How much 9 bicycle cost?

Solution :-

16 bicycle cost=17,600

${:}\longrightarrow$1 bicycle cost=${\frac {17600}{16}}=1100$

${:}\longrightarrow$9 bicycle cost=1100×9

${:}\longrightarrow$Rs 9900