1) By how much percent is the four-fifth of 70 less than five-seventh of 112? A) 42% B) 30% C) 24% D) 36% E) 45% Answer: Option BExplanation:Four-fifth of $70 = \frac{(70\times 4)}{5} = 56$ Five-Seventh of $112 = \left(\frac{5}{7}\right)\times 112 = 80$ Required % $= \frac{(80-56)}{80}\times100 =30$%
