A, B and C are three positive numbers such that A is 70% of B, and B is 40% of C. If the sum of all three numbers is 336, then 15% of the sum of B and is:
Answer & explanation
Correct answer: option 1
70% = \(\frac{7}{10}\) & 40% = \(\frac{2}{5}\)
A : B = 7 : 10 & B : C = 2 : 5
Overall , A : B : C = 7 : 10 : 25
ATQ,
42R = 336
1R = 8
Now , 15% of B = \(\frac{3}{20}\) × (10+25) × 8 = 42