Percentage

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71 The base of triangle is increased by 10%. To keep the area unchanged the height of the triangle is to be decreased by

A
$$10\frac{1}{10}\%$$
B
$$9\frac{1}{11}\%$$
C
$$9\frac{1}{10}\%$$
D
$$10\frac{1}{9}\%$$

72 A man losses 20% of his money. After spending 25% of the remainder, he has ₹ 480 left. What is the amount of money he originally had?

A
₹ 600
B
₹ 720
C
₹ 800
D
₹ 840

73 In an examination, a student took five papers, with the full marks for each paper being the same. His marks in these papers were 3: 4: 9: 11: 13 in proportion. The candidate got 60% of the total marks in all papers. Then there's the number of papers in which he got less than 70%.

A
1
B
2
C
3
D
4

74 The marked price of a mobile is 15% higher than it's original price. Due to increase in demand, the price is further increased by 10%. How much profit will be obtained in selling the mobile?

A
25%
B
35%
C
26.5%
D
27%

75 Two numbers are respectively 20% and 50% more than a 3rd number. What is the percentage of 2nd with respect to 1st?

A
125%
B
90%
C
80%
D
75%

76 Arjun spends 40% of his allowance on rent expenses, 20% on food, and 50% of the remaining on loan EMI. He saves ₹ 450, which is half of the remaining amount after spending on the rent expenses, food and loan EMI. How much is his allowance?

A
₹ 4000
B
₹ 4500
C
₹ 4800
D
₹ 5000

77 Rajesh spends 20% of his monthly salary on house rent, 25% on food, 10% on invest, 15% on the education of his children, and 18% on other household expenses. He saves the remaining amount of ₹ 4800 at the end of the month. What is his monthly salary?

A
₹ 40,000
B
₹ 42,000
C
₹ 45,000
D
₹ 36,000

78 In a examination, A scored 10% more than B and B scored 5% more then C. If C scored 300 marks out of 400, then A's marks are

A
310
B
325
C
350
D
360

79 In an examination, it is required to get 296 marks out of total marks to pass. A student gets 222 marks and is declared failed by 10% marks. What are the total marks ?

A
830
B
810
C
780
D
740

80 In an election, 40% of the voters is female. 40% of the female and 60% of the male voted for me. The percentage of votes I got was

A
24%
B
42%
C
50%
D
52%