Question

if 15 envelopes cost Rs 11.25 ,what is the cost of 20 such envelopes​

Answer 1

Answer:

since 15 envelope cost =Rs.11.25

so 1 envelope cost=11.25/15

=Rs 0.75

so cost of 20 envelope=0.75*20

=Rs 15.00

Answer 2

Answer:

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Step-by-step explanation:first 15 envelop costs:- 11.25

then cost of one envelop:- 11.25/15

=0.75

then cost of 20 envelops:- 15