Rs. 800 becomes Rs. 956 in 3 years at certain simple rate of interest. If the rate of interest is increased by 4%, what amount will Rs. 800 become in 3 years ?

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Rs. 800 becomes Rs. 956 in 3 years at certain simple rate of interest. If the rate of interest is increased by 4%, what amount will Rs. 800 become in 3 years ?

ARs. 1020.8

BRs. 1025

CRs. 1025

DData inadequate

upendra ? undefined

Correct answer is: Rs. 1025

Explanation:

SI = 956 – 800 = 156 Rs.

\(\therefore Rate = \frac{SI\times 100}{Prin.\times Time}\)

\(= \frac{156\times 100}{800\times 3} = 6.5\%\ per\ annum\)

\(\text{∴ New rate = 10.5% }\)

\(\therefore SI = \frac{PRT}{100}\)

\(\frac{800\times 3\times 10.5}{100} = 252\ Rs.\)

\(∴ Amount = 800 + 252 = 1052 Rs.\)

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A grocer purchased 2 kg. of rice at the rate of Rs.15 per kg. and 3 kg. of rice at the rate of Rs.13 per kg. At what price per kg. should he sell the mixture to earn $33\frac{1}{3}$% profit on the cost price?

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A grocer purchased 2 kg. of rice at the rate of Rs.15 per kg. and 3 kg. of rice at the rate of Rs.13 per kg. At what price per kg. should he sell the mixture to earn $33\frac{1}{3}$% profit on the cost price?

ARs.28.00

BRs.20.00

CRs.18.40

DRs.17.40

Nithin ? undefined

Correct answer is: Rs.18.40

Explanation:

Mixture = 2 kg of rice at Rs.15/kg + 3 kg. of rice at Rs.13/kg
Total weight = 2 + 3 = 5 kg

Total cost price = \(\left(2 \times 15\right)+ \left(3 \times 13\right)\)

= 30 + 39 = Rs.69
Cost price per kg of the mixture = \(\frac{69}{5}\) = Rs.13.80

Selling price to get \(33\frac{1}{3}\) % profit

\(=\frac{100+33\frac{1}{3}}{100}\) = Rs.13.80

\(= \frac{400}{3 \times 100}\) = Rs.13.80

\(= \frac{4}{3}\) = Rs.13.80

= Rs.18.40

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If on selling 12 notebook any seller makes a profit equal to the selling price of 4 notebooks. What is his percent profit ?

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If on selling 12 notebook any seller makes a profit equal to the selling price of 4 notebooks. What is his percent profit ?

A50

B25

C$16\frac{2}{3}$

DData inadequate

Nithin ? Aug 7 '2022 at 21:44

Correct answer is: 50

Explanation:

\(\text{Profit = Selling price of 4 notebooks cost}\)
\(\text{price = selling price of(12 - 8) = 4 notebooks.}\)
\(\therefore \% \text{ profit = } \frac{4}{8}\times 100 = 50\)

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Present age of Rahul is 5 years less than Ritu’s present age. If 3 years ago Ritu’s age was x, which of the following represents Rahul’s present age ?

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Present age of Rahul is 5 years less than Ritu’s present age. If 3 years ago Ritu’s age was x, which of the following represents Rahul’s present age ?

Ax + 3

Bx - 2

Cx - 3 + 8

Dx + 3 + 8

Akilesh Kharvi ? Jun 28 '2020 at 13:42

Correct answer is: x - 2

Explanation:

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A car covers its journey at the speed of 80 km/hour in 10 hours. If the same distance is to be covered in 4 hours, by how much the speed of car will have to increase ?

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A car covers its journey at the speed of 80 km/hour in 10 hours. If the same distance is to be covered in 4 hours, by how much the speed of car will have to increase ?

A8 km/hr

B10 km/hr

C120 km/hr

D16 km/hr

akilesh kharvi ? Jun 7 '2020 at 15:20

Correct answerr is: 120 km/hr

Explanation;

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