What will be the difference between the interest accrued on a sum of Rs. 4500 at 12% per annum for 2 years and that on a sum of Rs. 5600 at 9% per annum for 2 years ?

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What will be the difference between the interest accrued on a sum of Rs. 4500 at 12% per annum for 2 years and that on a sum of Rs. 5600 at 9% per annum for 2 years ?

ARs 75

BRs 72

CRs 69

DRs 76

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The ratio of the present age of Mahesh and Ajay is respectively 3 : 2. After 8 years, ratio of their age will be 11 : 8. What will be the present age of Mahesh's son if his age is half of the present age of Ajay?

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The ratio of the present age of Mahesh and Ajay is respectively 3 : 2. After 8 years, ratio of their age will be 11 : 8. What will be the present age of Mahesh's son if his age is half of the present age of Ajay?

A12 years

B24 years

C18 years

D9 years

Nithin ? undefined

Correct answer is: 12 years

Explanation:

Let, Mahesh => 3x years
Ajay => 2x years
After 8 years.

\( \frac{3x+8}{2x+8}=\frac{11}{8}\)

=> 24x + 64 = 22x + 881
=> 2x = 88 - 64 = 24
=> x = 12

=> Therefore, Ajay's age 2x = \(2 \times 12\) = 24 years
Therefore, Age of Mahesh's son
\(= \frac{1}{2} \times 24\)

= 12 years

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If 50% of a certain number is equal to 3/4 th of another number, what is the ratio between the numbers?

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If 50% of a certain number is equal to 3/4 th of another number, what is the ratio between the numbers?

A3 : 2

B2 : 5

C5 : 2

D3 : 4

Nithin ? undefined

Correct answer is: 3 : 2

Explanation:

Let, First number = x
Second number = y

\(\therefore x \times \frac{50}{100}=y \times \frac{3}{4}\)

\(\implies \frac{x}{2}=y \times \frac{3}{4}\)

\(\implies \frac{x}{y}=\frac{3}{4} \times 2=\frac{3}{2} \text{ or}\ 3 : 2\)

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An article was sold for Rs. 5220 at a loss of 42% of the cost price. What will be the selling price of the article for a profit of 42% ?

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An article was sold for Rs. 5220 at a loss of 42% of the cost price. What will be the selling price of the article for a profit of 42% ?

ARs. 12580

BRs. 17280

CRs. 12780

DRs. 15280

Nithin ? Aug 2 '2022 at 21:29

Correct answer is: Rs.12780

Explanation:

C.P. of article

\(= \Large 5220 \times \frac{100}{ \left(100-42\right) }\)

\(= \Large \frac{5220 \times 100}{58} \text{ = Rs.9000}\)

\(\therefore \text{ Required S.P.}\)

\(= \Large \frac{9000 \times 142}{100} \text{ = Rs.12780}\)

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The average height of 16 students is 142 cm. If the height of the teacher is included, the average height increases by 1 cm. The height of the teacher is

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The average height of 16 students is 142 cm. If the height of the teacher is included, the average height increases by 1 cm. The height of the teacher is

A156 cm

B159 cm

C158 cm

D157 cm

Akilesh Kharvi ? May 27 '2017 at 12:34

Answer is : 159 cm

Explanation:

Height of teacher \(= 143 \times 17 - 142 \times 16\)

= 159 cm

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