The cost price of an article is 80% of its marked price for sale. How much per cent does the tradesman gain after allowing a discount of 12%?
20
12
10
10
A merchant has announced 25% rebate on prices of ready-made garments at the time of sale. If a purchaser needs to have a rebate of Rs. 400. then how many shirts, each costing Rs. 320, should he purchase?
10
7
6
6
A merchant purchases a wrist watch for Rs. 450 and fixes its list price in such a way that after allowing a discount of 10%, he earns a profit of 20%. Then the list price (in rupees) of the wrist watch is
500
600
750
750
A reduction of 10% in the price of tea enables of a dealer to purchase 25 kg more tea for Rs. 22500. What is the reduced price per kg of tea?
Rs. 70
Rs. 80
Rs. 90
Rs. 90
C.
Rs. 90
Shortcut Method:
10% of 22500 = 25 kg
2250 = 25 kg
∴ Reduced price per kg = .
Ram donated 4% of his income to a charity and deposited 10% of the rest in a Bank. If now he has Rs. 8640 left with him, then his income is
Rs. 12500
Rs. 12,000
Rs. 10,500
Rs. 10,500
If the length of a rectangle is increased by 10% and its breadth is decreased by 10%, then its area
decrease by 1%
increases by 1%
decreases by 2%
decreases by 2%
Three spherical balls of radii 1 cm, 2 cm and 3 cm are melted to form a single spherical ball. In the process, the loss of material is 25%. The radius of the new ball is
6 cm
5 cm
3 cm
3 cm
If A : B = 2 : 3, B : C = 4 : 5 and C : D = 5 : 9, then A : D is equal to
11 : 17
8 : 27
5 : 9
5 : 9
If the length of a rectangle is increased in the ratio 6 : 7 and its breadth is diminished in the ratio 5 : 4 then its area will be diminished in the ratio
17 : 16
15 : 14
9 : 8
9 : 8
7 years ago, the ages (in years) of A and B were in the ratio 4 : 5; and 7 years hence they will be in the ratio 5 : 6. The present age of B is
56 years
63 years
70 years
70 years