Question

lf 15 envelopes cost rupees 11.25, what is the cost of 20 such envelopes

Answer 1

Cost of 15 envelopes = 11.25



Cost of 1 envelope = ( Cost of 15 envelopes)/15



Cost of 1 envelope = 11.25/15



Cost of 1 envelope = Rs 0.75



Therefore,


Cost of 20 envelopes = 20 × Cost of 1 envelope = 20 × 0.75 = Rs 15.

Answer 2

• cost of one envelope= 11.25
• cost of 20 envelope= 11.25× 20= 225