Percentage
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20% of a man's salary is paid as rent, 60% are his living expenses and 10% are his savings. If he spends remaining ₹ 30 on the education of his children, find his salary
-
₹ 300/-
-
₹ 900/-
-
₹ 3,000/-
-
₹ 9,000 /-
A.
₹ 300/-
Remaining spending is (100 - 20 - 60 - 10)% = 10%
Now, 10% = ₹ 30
or 100% = ₹ 300/-
Therefore, his salary is ₹ 300/-
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72% of the students of a certain class took Biology and 44% took Mathematics. If each student took at least one of Biology or Mathematics and 40 students took both of these subjects, the total number of students in the class is
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200
-
240
-
250
-
320
C.
250
Percentage of students opting for both subjects
= 72 + 44 - 100 = 16
No of students opt for both subjects = 40
16% = 40
∴ Total no of students = 
A businessman's earning increases by 25% in one year but decreases by 4% in the next year. Going by this pattern, after 5 years, his total earnings would be Rs. 72000. What is his present earning?
-
Rs. 10000
-
Rs. 80000
-
Rs. 40000
-
Rs. 54000
C.
Rs. 40000
Let the business man's present earning be Rs. x
According to the question,
A man spends 60% of his income on different expenditures. His income is increased by 20% and his expenditure also increased by 10%. Find the percentage decreased in his saving?
-
10%
-
15%
-
20%
-
25%
A.
10%
Let, income of a person = ₹ 100
∴ Spend on different expenses = ₹ 60
∴ Total saving = 100 - 60 = ₹ 40
Now, income after increment of 20% = 
and expenses after increment of 10% = 120 x (60 + 10)%
= 120 x 
∴ New saving = 120 - 84 = ₹ 36
Now, percentage of decrease = 
= 
A man spends 75% of his income. His income increases by 20% and his expenditure also increases by 10%. Find the percentage increase in his savings.
-
25%
-
50%
-
15%
-
10%
B.
50%
Let man's income be Rs. 100.
∴ Expenditure = Rs. 75
Savings = Rs. 25
After increase:
New income = Rs. 120
Expenditure = 
Savings = Rs 120 - Rs 82.5 = Rs. 37.5
∴ Percentage increase in savings
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Mock Test Series
Mock Test Series