Question

If the cost of 7 kg of onions is Rs 84. find the following. (i) weight of the onions bought for $ 180
(ii) The cost of 3 kg of onions​

Answer 1

Step-by-step explanation:

b.cost of one kg = 84/7=12

cost of three kg = 12*3=36

Ans.36 Rs

Answer 2

Answer:

(i)weight of onion bought  for $180=1050k.g {takinh 1$=70Rs.}

(ii)cost of 3 k.g of onions=36Rs.

Step-by-step explanation:

we have been given that Cost of 7k.g of Onions is Rs.84

Therefore cost of 1 k.g of onion is $\frac{84}{7}$=12Rs.

now, we have to find the weight of onions bought for$180

taking 1 $=70rs. therefore 150$=180×70=12600rs.

now weight of onion bought for 12600rs.=$\frac{12600}{12}$=1050k.g

now calculating cost of 3k.g of onions=12×3=36Rs.

therefore weight of onion bought for $180 is 1050kg

and cost of 3kg of onion is 36rs.