Question

if four pen cost ₹20 then what is the cost of 18 pens ( unitary method) ​

Answer 1

Answer:

90 rs.

Step-by-step explanation:

Cost of 1 pen= 20/4=5

So, Cost of 18 pens= 18×5= 90

Hope it helps you

Answer 2

Step-by-step explanation:

cost if 4 pen =20

cost of one pen =20/4

cost of 18 pen =20/4*18/1 =90 ruppees