Answer: 150

Explanation:

Answer: 5 : 3

Explanation:

Answer: 21 : 22

Explanation:

Answer: 2 : 3 : 4

Explanation:

Answer: 9

Explanation:
Let Raj’s share be X and Kishan’s share be Y.
X : Y = 2 : 1 = 60000*12 : 40000*t ….(where t is number of months Kishan invested his money)
2 : 1 = 72 : 4t
36 = 4t
t = 9

Answer: 540

Explanation:
Let the share of Sanjay be X, of Manohar be Y and that of Harpreeth be Z
Therefore, X:Y:Z = 20*30 : 12*15 : 10*12
= 600 : 180 : 120 = 10 : 3 : 2
Now, 10a+3a+2a = 15a = 2700
a = 180
Manohar ‘s share is Y = 3a = 3*180 = 540

Answer: 48

Explanation:
If A invests amount C1 for T1 time and his share of profit is P1, and B invests amount C2 for T2 time and his share of profit is P2, then, C1 * T1 / C2 * T2 = P1/P2
If P is the Anuj’s share of profit, then Jay gets (240 – P)
Therefore, 6000 * 12 / 3000 * 6 = (240 - P) / P = 72/ 18 = 4
4P = (240 – P)
5P = 240
P = 48

Answer: 4:1

Explanation:
Let the total quantity of mixture be 1. If quantity of 1st type is x then quantity of the 2nd type will be (1-x)
Therefore, 13x + 19(1-x) = 14.2
13x -19x + 19 = 14.2
4.8 = 6x
x = 0.8 ; (1-x) = 0.2
Therefore, the ratio is 0.8 : 0.2 = 4:1

Answer: 42

Explanation:
As the present age of krupa and Jay are in the ratio 5:7, let their ages be 5x and 7x respectively.
Therefore, their ages after 6 years will be (5x+6) and (7x+6) respectively.
Now, it is given that (5x+6)/(7x+6) = 3/4
4*(5x+6) = 3*(7x+6)
x = 6
Hence, the present age of Jay is 7x = 7*6 = 42 years

Answer: my/(y + z), mz/(y + z)

Explanation:
Let the numbers be a and b.
Therefore, (a+b) = m; a/b = y/z
a = yx, b = zx
(a+b) = (yx + zx) = (y+z)x = m
Therefore, x = m/(y+z)
Hence, a = my/(y+z); b = mz/(y+z)