CDS MATHEMATICS QUIZ 6

Question 1:

$X$ sells his goods $25 \%$ cheaper than $Y$ and $25 \%$ dearer than $Z$. How much percentage is $Z$ 's goods cheaper than $Y$ ?

$\frac{100}{3} \%$

$40 \%$

$50 \%$

$\frac{200}{3} \%$

Question 2:

Anuradha scoring $\mathrm{x} \%$ marks in an examination and fails by a mark, while Amit scores y% marks gets b marks more than the minimum required pass marks. What was the maximum marks for the examination?

$\frac{100(a+b)}{x-y}$

$\frac{100(a-b)}{x+y}$

$\frac{100(a+b)}{y-x}$

$\frac{100(a-b)}{x-y}$

Question 3:

Uprant spends $70 \%$ of his income. If his income increases by $12 \%$ and the savings decrease by $15 \%$ then what will be the percentage increase in his expenditure?

$20.5$

$23.5$

$17.5$

$22$

Question 4:

On a certain date, china has a success rate of $40 \%$ against Australia in all the ODIs played between the two countries. They lost the next 30 ODIs in a row to Australia and their success rate comes down to $30 \%$. The total number of ODIs played between the two countries is:

$125$

$120$

$130$

$135$

Question 5:

A wire of length $2.5$ meters was measured as $2.55$ metres by mistake. What will be the value of error percent?

$25 \%$

$30 \%$

$22.5 \%$

$20 \%$

Question 6:

A scored $72 \%$ in a paper with a maximum marks of 1800 and $80 \%$ in another paper with a maximum marks of 1400 . If the result is based on the combined percentage of two papers, the combined percentage is:

$75 \cdot 5 \%$

$73.5 \%$

$64.6 \%$

$61.5 \%$

Question 7:

In a village, each of the $60 \%$ of families has a goat; each of the $30 \%$ of families has a hen and each of the $15 \%$ of families has both a goat and a hen. In all there are 96 families in the village. How many families do not have a goat or a hen?

20

24

26

17

Question 8:

Mr. Rohan owned a flat for Rs. 13.2 lacs. He spends $20 \%$ of his monthly salary on its paintings. $25 \%$on lighting and furniture,$15 \%$ on foods and other supplements. If Mr. Rohan's s annual salary is $10.8$ lacs then find the total spending made by Mr Rohan?

137.4 lacs

$1.374$ lacs

11.74 lacs

13.74 lacs

Question 9:

A reduction of $21 \%$ in the price of an item enables a monu to buy $6 \mathrm{~kg}$ more for $₹ 100$. The reduced price of item per kg is:

$-4.5$

$3.0$

$3.5$

$4.5$

Question 10:

Nandan scored $80 \%$ marks in five subjects together Hindi,Social Science, Biology, English and Sanskrit, where the maximum marks of each subject were 110 . How many marks did Nandan scored in Social Science, if she scored 89 marks in Hindi 92 marks in Sanskrit, 98 marks in Biology and 81 marks in English?

80

75

65

70