A seller allows a discount of 5% on a watch. If he allows a discount of 7%, he earns Rs.15 less in the profit. What is the marked price?

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A seller allows a discount of 5% on a watch. If he allows a discount of 7%, he earns Rs.15 less in the profit. What is the marked price?

ARs.697.50

BRs.712.50

CRs.750

DRs.817.50

Nithin ? undefined

Correct answer is: Rs.750

Explanation:

lf the marked price be x then,

\(= \left(7-5\right)\) % of x = 15

\(\implies \frac{x \times 2}{100} = 15\)

\(\implies \frac{1500}{2} = \text{ Rs.750}\)

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A dealer offers a discount of 10% on the marked price of an article and still makes a profit of 20%. If its marked price is Rs.800, then the cost price is:

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A dealer offers a discount of 10% on the marked price of an article and still makes a profit of 20%. If its marked price is Rs.800, then the cost price is:

ARs.600

BRs.700

CRs.800

DRs.900

Nithin ? undefined

Correct answer is: Rs.600

Explanation:

Marked Price = Rs.800
S.P. = \(\frac{800 \times 90}{100}\)= Rs.720

Therefore, C.P. = \(= \frac{100}{120} \times 720\)

= Rs.600

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The difference between a discount of 40% on Rs.500 and two successive discounts of 36% and 4% on the same amount is

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The difference between a discount of 40% on Rs.500 and two successive discounts of 36% and 4% on the same amount is

ARs.0

BRs.2

CRs.1.93

DRs.7.20

Nithin ? undefined

Correct answer is: Rs.7.20

Explanation:

Discount of 40% on Rs.500

\(= \frac{500 \times 40}{100}\)= Rs.200

and single discount per cent equivalent to 36% and 4%

\(= \left(r_{1}+r_{2}-\frac{r_{1}r_{2}}{100}\right)\%\)

\(= 36+4-\frac{36 \times 4}{100}=40-1.44 = \text{38.56%}\)

Therefore, Discount by 38.56% on 500

\(= \frac{38.56 \times 500}{100} = \text{Rs.192.80}\)

Hence, required difference = (200 - 192.80} = Rs.7. 20

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A T-shirt marked at Rs. 400 is sold for Rs.360. The rate of discount is

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A T-shirt marked at Rs. 400 is sold for Rs.360. The rate of discount is

A12%

B10%

C15%

D17%

Nithin ? undefined

Correct answer is: 10%

Explanation:

Discount

\(= \frac{400-360}{400} \times 100\)

= 10%

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The cost of making an article is divided between materials. labour and overheads in the ratio of 3 : 4 : 1. If the material costs Rs.234, then the labour cost is:

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The cost of making an article is divided between materials. labour and overheads in the ratio of 3 : 4 : 1. If the material costs Rs.234, then the labour cost is:

ARs.176

BRs.312

CRs.78

DRs.390

Nithin ? undefined

Correct answer is: Rs.312

Explanation:

Materials : labour : Overheads = 3 : 4 : 1
Sum of ratios = 3 + 4 +1 = 8
If the total cost be Rs. x, then

\(= \frac{3x}{8}=234 \)

\(\implies \Large x = \frac{234 \times 8}{3} \) = Rs.624

Therefore, Labour cost = \(\frac{4}{8} \times 624\)

= Rs.312

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