Exercise

Direction (Q. 1 - 5) : See the following pie-chart carefully and answer the questions based on it.

What is the ratio of production by deviation method in Japan to that by scientific method in China ?

Required ratio = 40/60 = 2 : 3

What is the average production of rice in the above, given states by both methods ?

Avg = 741/7 = 105 6/7 lakh tonnes.

The average production of rice by scientific method is what per cent of the average production of rice by deviation method ?

Average production of rice by scientific method

= (60 + 30 + 65 + 75.5 + 50 + 80 + 70)/7

= (430.5)/7

Average production of rice by deviation method = 741 - 430.5 = 310.5

Required % = 430.5/310.5 x 100 = 140%

The production of rice by scientific method in Bhutan is what per cent more than that in Japan by deviation method ?

Required % = (50 - 40)/40 x 100 = 25%

Which country in the above said pie-chart has least difference of production by two different methods ?

No Explanation

Direction (Q. 6 - 10) : See the given figure carefully and answer the questions based on it.

What is the ratio of the persons living in joint families and also school teachers but ny married to the number of people who are school teachers ?

Data about persons living in joint families and also teachers but not married is not given.

What is the ratio of the number of married persons to the number of school teachers ?

Reqd ratio = 500 : 350 = 10 : 7

Total number of school teachers is what per cent of the number of persons living in joint families ?

Reqd % = 350/600 x 100 = 58.33%

The number of school teachers who live in joint families is approx what per cent of the total number of people ?

Reqd % = 200/1075 x 100 = 18.6%

= 135/500 x 100 = 27%

How many persons are unmarried ?

Number of married persons = 425 + 150 = 575