1381.
Find the single discount rate percentage equivalent to the successive discounts of 10%, 20% and 20%.
(A)
42.4%
(B)
54.6%
(C)
40%
(D)
50%
1382.
Study the given table and answer the question that follows. The table shows the number of students studying in 6 different classes of 6 different schools. The number of students studying in class X from school P forms approximately what percentage of the total number of students studying in class X from all schools together?
(A)
8%
(B)
24%
(C)
32%
(D)
16%
1383.
The base of a parallelogram is twice its height. If the area of the parallelogram is 338 cm2, then find its height (in cm).
(A)
13
(B)
11
(C)
14
(D)
12
1384.
A 12 litre solution of acid and water contains 30% acid. How much water (in litres) must be added to get a solution having 20% acid?
(A)
6
(B)
3
(C)
5
(D)
4
1385.
A shopkeeper offers 3 schemes of discounts to his customers. Which of the following schemes will fetch the minimum discount percentage? A)Two successive discounts of 24% and 27%. B) Buy 5 get three free. C) Buy 6 and get 10.
(A)
A
(B)
C
(C)
Both A and C
(D)
B
1386.
Ramanna purchased raw materials for a certain price to manufacture a product. However, owing to shortage of labour, 22.5% of the raw materials could not be utilised and got wasted. 80% of the cost of raw materials used was added as the cost of manufacturing. If Ramanna could sell his product at a price to earn an overall profit of 20% after offering a discount of 20%, how many times of the total cost of the raw materials purchased was the marked price of the product?
(A)
2.44 times
(B)
2.42 times
(C)
2.43 times
(D)
2.40 times
1387.
A car covers 20 km in the first quarter of an hour, 25 km in the second quarter of that hour and 15 km in the third quarter. The average speed of the car (in km/h) over the entire journey is:
(A)
70
(B)
75
(C)
80
(D)
65
1388.
In ∆ABC, AD is the internal bisector of ∠A, meeting the side BC at D. If BD = 5 cm, BC = 7.5 cm, then AB : AC is:
(A)
1 : 2
(B)
1 : 3
(C)
3 : 1
(D)
2 : 1
1389.
If sec 6A = cosec (A – 29°), where 2A is an acute angle, then the measure of ∠A = ___°.
(A)
18
(B)
17
(C)
21
(D)
19
1390.
A person borrowed ₹ 1760 at 6% per annum and ₹ 2240 at 9% per annum at simple interest for the same period. He had to pay ₹ 1536 in all as interest. Find the time (in years).
