Question

if the cost of 20 books is rupees 180, how much will 15 books cost​

Answer 1

Answer:

135

Step-by-step explanation:

cost of 20 books=180  

cost of 1 book=180/20=9

cost of 15 book=9*15=135

HOPE IT HELPS:)

Answer 2

Answer:

Step-by-step explanation:

for 20 books it costs rupees 180

so, for 1 book it costs

180/20

=rupees 9

so therefore, one book costs rupees 9

so 15 books cost = 15*9= rupees 135