Question

Find the total cost of 15 pens at Rs.12 2/3 per pen and 10 pencils at Rs.5 1/5 per pencil

Answer 1

Step-by-step explanation:

ANSWER

Given total cost of 5 pens and 10 pencil = Rs 30

5 pens + 10 pencils = 30

pens + 2 pencils = 1

also given pen cost 3 more than a pencil

i.e, pen = 3 + pencil.

pen - pencil = 3

pens + 2 pencils = 6

_______________

-3 pencils = -3

pencils = 1

pen - 1 = 3

pen = 4

cost of pencils = 1 cost of pen = 4

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Answer 2

Answer:

130 RS

Step-by-step explanation:

Cost of 2/3 pen is Rs 12 each

Cost of 15 pens =15×2/3×12= RS 120

Cost of 1/5 pencil is Rs 5

Cost of 10 pencils= 5 ×1/5×10= RS 10

TOTAL COST = RS 130