Question

the cost of a dozen pencil is rs 42 and the cost of 10 eareser is rs 30 how much money will you need to buy 4 of these pencils and 3 of the eareser
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Answer 1

Step-by-step explanation:

cost of( dozen)12 pencil=rs42

so,cost of 1 pencil =42÷12=rs3.5

cost of 4 pencil=3.5×4=14

cost of 10 eraser= rs30

so, cost of 1 eraser =30÷10=rs 3

cost of 3 eraser=3×3=rs9

total money needed to buy 4 pencils and 3 erasers = 14+9 = rs 23