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CUET
General Test
Numerical Ability
Ratios
If a : b : c = 2 : 3 : 5 and 5b - a + 2c = 115, then what is the value of b ?
15
12
6
24
Given, a : b : c = 2 : 3 : 5
Then, 5b - a + 2c = 15R - 2R + 10R = 23R
23R = 115 ⇒ R = 5
b = 15