Question

If a= 1/3 and b=1/5 , then the value of a+b/ab is

• A. 8/15
• B. 8
• C. 1/8
• D. 2

Answer 1

Answer:

B. 8

$a= \frac{1}{3} , b=\frac{1}{5}$

$\frac{a+b}{ab}= \frac{\frac{1}{3}+\frac{1}{5}}{\frac{1}{3}\times\frac{1}{5}}=\frac{\frac{8}{15}}{\frac{1}{15}}=8$