Question

7 pens cost Rs.56 .What is the cost of 21 pens?​

Answer 1

Answer:

168

Step-by-step explanation:

one pen cost=8

21 pen cost =8*21=168

Answer 2

Answer:

168 ₹

Step-by-step explanation:

By using unitary method :-

7 pens cost 56 ₹

1 pen cost 56/7 ₹

21pens cost 56/7× 21 ₹

therefore the price of 21 pens are:-

 56/7× 21

= 56× 3

=168 ₹                

the price of 21 pens is 168 ₹

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