In a class of 72 students, 87.5 % of the students cleared
the CAT exam. How many did not clear it?
Numbers of students who did not clear the CAT exam = 12.5 *
72/100 = 9.
The tax on an article is increased by 20 %. As a result of
which the consumption decreases by 25 %. What is the % change in the tax revenue
received by the government from this article?
% Change in Tax
revenue = 1.2 * 0.75 = 0.9
⇒ Net decrease of 10 %.
In an election between two candidates, one got 55% of the
total valid votes, 20% of the votes were invalid. If the total number of votes was
7500, the number of valid votes that the other candidate got, was :
Total number of
votes = 7500
Given that 20%
of Percentage votes were invalid
=>
Valid votes = 80%
Total
valid votes = 7500*(80/100)
1st candidate
got 55% of the total valid votes.
Hence the 2nd
candidate should have got 45% of the total valid votes
=> Valid
votes that 2nd candidate got = total valid votes x (45/100)
7500*(80/100)*(45/100)
= 2700
A student has to obtain 33% of the total marks to pass. He
got 125 marks and failed by 40 marks. The maximum marks are
Given that the
student got 125 marks and still he failed by 40 marks
=> The
minimum pass mark = 125 + 40 = 165
Given that
minimum pass mark = 33% of the total mark
=> total
mark =33/100 =165
=> total mark = 16500/33 = 500
Fresh fruit contains 68% water and dry fruit contains 20%
water. How much dry fruit can be obtained from 100 kg of fresh fruits ?
The fruit
content in both the fresh fruit and dry fruit is the same.
Given, fresh
fruit has 68% water.so remaining 32% is fruit content. weight of fresh fruits
is 100kg
Dry fruit has
20% water.so remaining 80% is fruit content.let weight if dry fruit be y kg.
Fruit % in
freshfruit = Fruit% in dryfruit
Therefore,
(32/100) x 100 = (80/100 ) x y
we get, y = 40 kg.