Question

A student was asked to simplify the following :

His answer was \(3\frac15.\) Find the per cent error in the answer. 

(a) 10% 

(b) 20% 

(c) 25% 

(d) 30%

Answer 1

(c) 25 %

Given exp. 

= \(\frac{7}{5-\frac83}÷\frac{3-\frac{2}{\frac3-\frac32}}{4-\frac32}\) - \(-\frac57\bigg[\frac7{10}+\frac65\times\frac{\frac{10}{3}-\frac52}{\frac{47}{21}-2}\bigg] + \frac{\frac{30}{16}+\frac{50}{32}}{\frac{50}{48}+\frac{10}{96}}\)