Question

A milkman sold a milk at rs. 18 per litre and gained 20% find the cost price for milkman

Answer 1

Step-by-step explanation:

C. P= S. P*100/(100+profit percentage)

= 18*100/(100+20)

=18*100/120

=18*5/6

=9*5/3

=3*5

=15rs

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Answer 2

Answer:

The cost price of the above-given milk packet was Rs 15.

Step-by-step explanation:

We have been given here that, the milkman has sold the milk at the cost of

Rs. 18. and the profit that has been made is 20 percent.

We assume that the given cost price of the milk to be Rs m

Now we have,

CP = SP - PROFIT

We have, CP = Rs m and profit = 20 % of m and SP = Rs 18

⇒m = 18 - $\frac{20}{100}$ × m

⇒ m = 18 - $\frac{1}{5} m$

⇒ m + $\frac{1}{5}m$ = 18

⇒$\frac{5m + 1m}{5}$ = 18

⇒$\frac{6m}{5} = 18$

⇒ 6m = 18 × 5

⇒ 6m = 90

⇒ m = 90 ÷ 6

⇒ m = 15

Therefore the cost price of the milk packet was Rs 15.