Question
Quantitative Aptitude Question on Logarithms
If p3 = q 4 = r5 = s6 , then the value of logs(pqr) is equal to
A
16/5
B
1
C
24/5
D
47/10
Answer
47/10
Explanation
Solution
The correct answer is (D):
Let p3 = q4 = r5 = s6 = k
p = k1/3, q = k1/4, r = k1/5, s = k1/6
pqr = k(20+15+12/60) = k47/60
logs(pqr) = logk1/6k47/60
= (47/60×6)logkK
= 47/10