The pie chart given below shows the break-up of number of hours of teaching various subjects at an institute by Mr. Raghav.Â
Question 98
Mr. Raghav taught Geometry for 36 hours. If the time taken in teaching Ratio consitutes one-fourth of the time for Arithmetic, then for how much time (in hours) did he taught the topic of Ratio?
Solution
Let total time taken = $$100x$$ hours
Time taken to teach Geometry = $$\frac{6}{100}\times100x=6x$$ hours
According to ques, => $$6x=36$$
=> $$x=\frac{36}{6}=6$$
=> Time taken to teach Arithmetic =Â $$\frac{46}{100}\times100x=46x$$ hours
= $$46\times6=276$$ hours
$$\therefore$$ Time required to teach ratio = $$\frac{276}{4}=69$$ hours
