An old man driving bike at 80 km per hour. However being sugar patient, old man could not travel continuously. He takes small breaks each of 2 minutes for every 15 minute of his drive. How much distance the old man will cover in 90 minutes?

A. 112 Km

B. 104 Km

C. 89 Km

D. 118 Km

Answer: Option B

Solution(By Examveda Team)

For every 15 minutes he takes a rest of 2 minutes.
Hence,
for 90 minutes of drive he would require 12 minutes of rest.
Thus, he will be traveling for 90 - 12 = 78 minutes.
In 60 minutes he covers 80 Km.
In 1 minute he would cover $$\frac{{80}}{{60}}$$ Km.
In 78 minutes he would cover $$\frac{{80}}{{60}} \times 78$$   = 104 Km.