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# PERCENTAGE & RATIO PROPORTION SET3

Q.1 Student secured 30% in the first paper out of 180. How much should he score in the 2nd paper out of 150, if he get atleast 50% overall marks ?
A) 109

B) 110

C) 111

D) 112

Ans. A

0.3*180 = 54

In 2nd paper=0.5*(150+180) = 165

Therefore, 165 – 54 = 109

PASSAGE:

Growth of the aircraft services is driven by the increase in the number of the people using aircraft services & the increase in per person use of the airplanes. In 2019 it expected that there will be 200 million aircraft service users in India or about 20% of the population will generate 50 billion Rs. in aircraft services revenue. Services revenues should expand from 50 billion Rs. to 150 billion Rs. by 2014, while the no. of users should grow to over 560 million or to about half the population of India in the same period.

Q.2 What is the estimated population of India in 2010 ?

A) 1000 crore

B) 100 crore

C) 98 crore

D) 115 crore

Ans. A

It is given 200 million = 20% of population

So, Population = 200*100/20 = 1000 million

Q.3 What will be the simple average growth rate of population of India in the given period 2010-2014 ?

A) 2%

B) 4.5%

C) 3%

D) 4%

Ans. C

Population in 2010 = 1000million

Population after 4 yrs i.e. in 2014 = 560*2 = 1120 million

Thus average growth = 1120-1000 / 1000*4 * 100

Or 120 / 1000*4 * 100

=12/4 %

=3 %

Q.4 If 50% of the population of any country can afford aircraft services use, it is economically developed. Can we say India will be a developed country in 2013 ?

A) Yes

B) No

C) Can’t say

Ans. D

As information regarding2013 is not known

Q.5 What will be the % growth of the revenues of the aircraft services in the given period 2010-2014 ?

A) 230%

B) 200%

C) 260%

D) 300%

Ans. B

Revenue in 2010 = 50 billion

Revenue in 2014 = 150 billion

Thus % growth = 150-50 / 50 * 100

100/50 * 100

=200 %

Q.6 What will be the growth in % of aircraft services users in India by 2014 ?

A) 150 %

B) 100 %

C) 200 %

D) 180 %

Ans. D

Users in 2010 = 200 million

Users in 2014 = 560 million

Thus, growth in % = 560-200 / 200 * 100

=360/200*100

=180 %