If the ratio of the cost price and the selling price of an article be 4 : 5, then the percentage of profit is
25%
15%
10%
B.
25%
Let the cost price of article = 4x
selling price of article = 5x
A and B together can complete a work in 24 days. B alone does part of this work in 12 days. How many days will A alone take to complete the remaining work?
24
36
48
72
C.
48
B's complete work in 12 days.
∴ Remaining work =
∴ B complete the whole work in (12 x 3) = 36 days
(A + B) complete the whole work in 24 days.
∴ A complete the whole work in
∴ A will complete the remaining work (2/3) in:
The heights of a cone and a cylinder are equal. The radii of their bases are in the ratio 2 : 1. The ratio of their volume is
4 : 3
3 : 4
2 : 1
1 : 2
A.
4 : 3
As h_{1} = h_{2 }
Which one of the following combination of measurements can form the sides of a triangle?
9 cm, 6cm, 2cm
11 cm, 3 cm, 12 cm
3 cm, 5cm, 8cm
5cm, 7cm, 13cm
B.
11 cm, 3 cm, 12 cm
As per triangle inequality property, Sum of any two sides of a triangle is greater than the third side.
(11 + 3) > 12.
(14) > 12.
A school has 8 periods of 45 min each, every day. How long will each period be if the school has to have 9 periods everyday, assuming the working hours to be the same?
40 min
35 min
30 min
45 min
A.
40 min
M_{1}D_{1}H_{1} = M_{2}D_{2}H_{2}
1 x 8 x 45 = 1 x 9 x H_{2}H_{2} = 40 min
A boat moves downstream at the rate of 8 km/hr and upstream at 4 km/hr. The speed of the boat in still water is:
4.5 km/hr
5 km/hr
6 km/hr
6.4 km/hr
C.
6 km/hr
Speed of boat in still water:
A shopkeeper marks his goods 50% more than the cost price and allows a discount of 25%. His profit or loss percentage is:
37.5%
25.5%
12.5%
25%
C.
12.5%
Net percentage:
In an ornament the ratio of gold and copper is 3 : 2. The percentage of gold in the ornament is
60%
40%
30%
20%
A.
60%
Percentage of gold in the ornament
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