Q 2300180918.     In a laboratory a scientist is conducting an experiment. He is mixing 3 types of chemicals. Each of the chemicals costs 65/kg, 70/kg , 90/kg respectively. The resulting mixture is sold at 102/ kg. Calculate the ratio at which 3 chemicals should be mixed to earn a profit of 20%.

IBPS-PO 2017 Mock Mains
A

4:3:10

B

3:4:10

C

2:3:12

D

3:4:12

E

2:5:12

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