Question

there are two types of rice.Type a costs ₹ 3.20 per kg and type B costs ₹ 1.80 per kg.In what ratio these two types be mixed so that by selling the mixture at ₹2.40 to earn 20%?​

Answer 1

Answer:

120/100=2.40.

mixed ratio is 2.

3.2_______1.8

\ /

2

/ \

0.2. 1.2

the ratio is 1:6

Answer 2

Given :

Cost of first type of rice = Rs.3.20 kg

Cost of second type of rice = Rs. 1.80/ kg

Selling price of mixture = Rs. 2.40 /kg

Profit% = 20%

To find: ratio of first type to second type  of rice.

Solution :

Selling  price of mixture = RS. 2.40 per kg

So, cost price would be :

$\dfrac{2.40\times 100}{120}=Rs.\ 2.00$

Using "Mixture and Allegations ", we get that

First type       Second type

  3.20                     1.80

                 2.00

-----------------------------------------

2- 1.80       :          3.20 -2.00

  0.2          :            1.2

   1             :             6

Hence, the required ratio is 1:6.