Answer:
6 1/2 = 6x2+1/6=13/2
Cost of 1/4 l of milk =Rs.4
Cost of 13/2 l of milk=13/2 x4
=26/ 1/4
=26x4/1
=Rs.104
Question :
1⁄4 litre of milk cost Rs.4. How much would 6 1⁄2 litres of milk cost?
Answer :
6 1⁄2 litres of milk will cost Rs.104.
Given :
Cost of 1/4 litre of milk = Rs.4
To find :
Cost of 6 whole 1/2 litres of milk
Solution :
We need to apply unitary method here,
1/4 litre of milk costs Rs.4
Then 1 litre of milk will cost Rs.4 ÷ 1/4
= 4 × 4/1
= Rs.16
Hence, 6 whole 1/2 litres of milk will cost Rs. 16 × 6 whole 1/2
= 16 × 13/2
= 8 × 13
= 104
Hence, 6 1⁄2 litres of milk will cost Rs.104.
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