52.
The population of a town increases annually by 20%. If the present population is 80lakh, then what is the difference between the population three years ago and 2years ago?
(A)
75592.6
(B)
85592.6
(C)
65592.6
(D)
925925.93
53.
If two kinds of rice which cost ₹25 a kg and ₹40 a kg are mixed in the ratio of 3 : 2, then find the cost of the mixture per kg.
(A)
₹32
(B)
₹33
(C)
₹31
(D)
₹30
54.
A cone of slant height 4.2 units has a lateral surface area 13.2 units2. The radius of the base is:
(A)
1 unit
(B)
1.5 units
(C)
2.5 units
(D)
2 units
55.
42% of Ranita’s weekly income is equal to 56% of Bhaskar’s weekly income. If Bhaskar’s weekly income was raised by ₹ 200, while Ranita’s weekly income did not change, the ratio of the weekly incomes of Ranita and Bhaskar, respectively, would have been 5 : 4. What is Ranita’s weekly income (in ₹)?
(A)
4200
(B)
3600
(C)
3000
(D)
4000
56.
A is 25% more than B and B is 30% less than C. If C is 20% more than D, then by what percentage is A more than D?
(A)
3%
(B)
6%
(C)
5%
(D)
2%
57.
Akash and Vikash can complete a work in 40 days and 60 days, respectively. In how many days will the entire work be completed if they work on alternate days, starting with Akash?
(A)
48
(B)
52
(C)
50
(D)
42
58.
A 320 m long train completely crosses a 240 m long train, coming from the opposite direction, in y seconds. If the first train is travelling at the speed of 44 km/h and the second train is travelling at 56.8 km/h, then what is the value of y?
(A)
21
(B)
18
(C)
20
(D)
22
59.
If m × 7 + 4 − 6 ÷ 3 − 7 + 45 ÷ 5 × 4 + 49 = 87, then the value of m is:
(A)
7
(B)
14
(C)
0
(D)
1
60.
The difference between the two perpendicular sides of a right-angled triangle is 2 cm and its area is 24 cm2. What is the perimeter (in cm) of the triangle?
