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Quote:
A Lentil mixture is prepared using 2 different types of lentils: yellow and red. The ratio, in grams, of yellow lentils to red lentils is 3:2. How many grams of yellow lentils are in the mixture?

(1) The ratio of the densities (mass per unit volume) of yellow lentil to red lentil is 2:3.
(2) If 50 grams of yellow lentils are removed from the mixture, the ratio of yellow to red in the resulting mixture is 5:4

(1) insuf
mass/y:mass/r=2/3, r/y=2/3

(2) sufic
3x-50/2x=5/4, x=100

ans (B)
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A Lentil mixture is prepared using 2 different types of lentils: yellow and red. The ratio, in grams, of yellow lentils to red lentils is 3:2. How many grams of yellow lentils are in the mixture?


(1) The ratio of the densities (mass per unit volume) of yellow lentil to red lentil is 2:3.

This is saying the following massy/voly : massr/volr = 2/3
We have two unknowns. No way to solve.
Insufficient.

(2) If 50 grams of yellow lentils are removed from the mixture, the ratio of yellow to red in the resulting mixture is 5:4
(Y - 50) / R = 5:4

We also know from the stem that Y:R = 3:2

Two equations, two unknowns.

Sufficient.
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