An employer reduces the number of his employees in the ratio 9 : 8 and increases their wages in the ratio 14 : 15. If the original wage bill was ₹ 18,900, find the ratio in which the wage bill is decreased.
20 : 21
21 : 20
20 : 19
20 : 19
There is a ratio of 5 : 4 between two numbers. If 40 percent of the first is 12, then 50% of the second number is
12
24
18
18
The students in three classes are in the ratio 4 : 6 : 9. If 12 students are increased in each class, the ratio changes to 7 : 9 : 12. Then the total number of students in the three classes before the increase is
95
76
100
100
B.
76
Let originally the students were 4x, 6x, 9x in the classes respectively.
If 12 students are increased in each class then the total students were 7x, 9x, 12x.
Total students = 7x + 9x + 12x = 28x
According to the question,
(4x + 6x + 9x) + 3 x 12 = 28x
⟹ 19x + 36 = 28x
⟹ 28x - 19x = 36
⟹ 9x = 36
⟹ x = 4
∴ The total number of students in the three classes before increase
= (4x + 6x + 9x) = 19x = 19 x 4 = 76
₹ 864 is divided among A, B and C such that 8 times A's share is equal to 12 times B's share and also equal to 6 times C's share. How much did B get?
₹ 399
₹ 192
₹ 288
₹ 288
The population of a town is 3,11,250. The ratio between women and men is 43 : 40. If there are 24% literate among men and 8% literate among women, the total number of literate persons in the town is
41,800
48,900
56,800
56,800
Annual income of Amit and Veeri are in the ratio 3 : 2, while the ratio of their expenses is 5 : 3. If at the end of year each saves ₹ 1,000, the annual income of Amit is
₹ 9,000
₹ 8,000
₹ 7,000
₹ 7,000
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
Rs. 1050 are divided among A, B and C in such a way that the share of A is of the combined share of B and C. A will get
Rs. 200
Rs. 300
Rs. 320
Rs. 320
If A : B = 2 : 3 and B : C = 3 : 7, then A + B : B + C : C + A is
4 : 8 : 9
5 : 8 : 9
5 : 10 : 9
5 : 10 : 9