Question

Cost of 5 pencils is 20 then cost of 15

pencils is Rs​

Answer 1

Answer:

cost of 5 pencils=20

cost of 1 pencil=20/5=Rs.4

cost of 15 pencils=15×4=60

it is the answer

Answer 2

Answer:

The cost of 15 pencils is Rs. 60

Step-by-step explanation:

Given information,

The cost of 5 pencil is Rs. 20

We have to find out the cost of 15 pencils

As,

The cost of 5 pencils = 20

The cost of one pencil = $\frac{the \: cost \: of \: 5 \: pencils }{5}$

The cost of 1 pencil = $\frac{20}{5}$

The cost of 1 pencil = 4

The cost of 15 pencils= The cost of 1 pencil × 15

The cost of 15 pencils = 4 × 15

The value of 15 pencils = 60

Hence,

The cost of 15 pencils is Rs. 60