1296 ÷ (24 * 0.75) = ______?
1296 ÷ (24 * 0.75) = ______?
A. 36
B. 144
C. 288
D. 72
Explanation:
1296 ÷ 18 = ?
=> ? = 72
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45% of 750 – 25% of 480 =__________?
45% of 750 – 25% of 480 =__________?A. 216
B. 217.50
C. 236.50
D. 245
Explanation:
Given expression = (45/100 * 750) – (25/100 * 480) = (337.50 – 120) = 217.50A man purchased a watch for Rs. 400 and sold it at a gain of 20% of the selling price. The selling price of the watch is:__________?
A man purchased a watch for Rs. 400 and sold it at a gain of 20% of the selling price. The selling price of the watch is:__________?A. Rs. 300
B. Rs. 320
C. Rs. 440
D. Rs. 500
Explanation:
Let S.P = Rs. X
Then, 400 + 20% of x = x
(Or) 400 + X/5 = X
(Or) 4X/5 = 400
(or) x = 400 × 5/4 = 500
S.P = Rs. 500Two trains 140 metres and 120 metres are running in the same direction with speeds 40 kmph and 60 kmph respectively. In what time will the faster train pass the slower one?
Two trains 140 metres and 120 metres are running in the same direction with speeds 40 kmph and 60 kmph respectively. In what time will the faster train pass the slower one?A. 0.60 minutes
B. 0.36 minutes
C. 0.78 minutes
D. 0.42 minutes
Total distance = addition of length of the two trains = 140 + 120 = 260 metres
As the two trains are travelling in the same direction, their relative speed is:
v = | v1 – v2 | = | 40 – 60 | = 20 km/hr = 20*1000/60 = 1000/3 metres/min
t = 260/ 1000*3
t = 0.78 minutesThe length of a rectangle is increased by 25% and its breadth is decreased by 20%. What is the effect on its area?
The length of a rectangle is increased by 25% and its breadth is decreased by 20%. What is the effect on its area?A. Remains same
B. 5% decrease
C. 5% increase
D. 10% increase
Explanation:
100 * 100 = 10000
125 * 80 = 10000
No changeA cylinder and a cone have a same height and same radius of the base. The ratio between the volumes of the cylinder and cone is__________?
A cylinder and a cone have a same height and same radius of the base. The ratio between the volumes of the cylinder and cone is__________?A. 1:3
B. 3:1
C. 1:2
D. 2:1I. x2 + 3x – 18 = 0, II. y2 + y – 30 = 0 to solve both the equations to find the values of x and y?
I. x2 + 3x – 18 = 0,
II. y2 + y – 30 = 0 to solve both the equations to find the values of x and y?A. If x < y
B. If x > y
C. If x ≤ y
D. If x ≥ y
E. If x = y or the relationship between x and y cannot be established.
Explanation:
I. x2 + 6x – 3x – 18 = 0
=>(x + 6)(x – 3) = 0 => x = -6, 3
II. y2 + 6y – 5y – 30 = 0
=>(y + 6)(y – 5) = 0 => y = -6, 5
No relationship can be established between x and y.