Question

In what ratio must a grocer mix two varieties of pulses costing Rs. 15 and Rs. 20 per kg respectively so as to get a mixture worth Rs. 16.50 kg?

Answer 1

Let x kg be quantity of fist type of pulses and (1-x) be the quantity of second type of pulses.

a grocer mix two varieties of pulses costing Rs. 15 and Rs. 20 per kg respectively.

15(x) + 20(1-x) = ₹16.50

15x+20-20x =16.50

-5x+20 =16.50

-5x = 16.50-20

-5x = -3.5

x = 7/10

(1-x) = 1-7/10

→(10-7)/10

→3/10

We need to find the ratio must a grocer mix two varieties of pulses costing Rs. 15 and Rs. 20 per kg respectively.

x : (1-x) = 7/10 : 3/10

→7 : 3

Hope it helps