Question

The cost of 18 pens are ₹360. What is the cost of 45 pens?

Answer 1

Answer:

900Rs

Explanation:

So, if cost of 18 pens=360rs

Then, by unitary method

Cost of 1 pen =360/18

And we have to find the cost of 45 pens then

Cost of 45 pens =45×360/18

=900

Answer 2

Answer:

the cost of 18 pens =₹360

so, first we can find 1 pen ₹ then,

360÷18 =20

one pen =₹20 so,

1. 20×45= 900 ans