Question

if 20 litre of cooking oil cost 400 how much would 50 litrs cost​

Answer 1

Answer:

by the concept of unitary method:

cost of 20 litre = rs. 400

=> cost of 1 litre = 400/20 = 20 rs.

so,

cost of 50 L = 20 × 50 = 1000 rs.

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

Cost of Milk - 29 Rupees per litre

one litre =1000ml

So, 750ml of Milk will cost = 29*0.750=21.75

Cost of cooking Oil =55 per litre

so, 3 litre and 500 ml will be cost = 55*3.5 = 192.5

Total cost of purchased product = 21.75+192.5 = 214.25 Rupees.

Amount given to shopkeeper = 500 - 214.25(Purchased value)

Amount she get back = 285.75