Question

The salaries of A, B and C are in the ratio 1: 3: 4. If the salaries are increased by 5%, 20% and 25% respectively, then the increased salaries will be in the ratio?
(a) 20: 66: 95
(b) 21: 66: 95
(c) 21: 72: 100
(d) 19: 66: 92

Answer 1

Let A's Salary = Rs. 100
Then, B's Salary = Rs. 300
And, C's Salary = Rs 400
Salary has given in 1:3:4 ratio.
Now,
5% increase in A's Salary, 
A's new Salary = (100 + 5% of 100) = Rs. 105.
B's Salary increases by 10%, Then,
B's new Salary = (300 + 10% of 200) = Rs. 330.
C's Salary increases by 15%,
C's new Salary = (400 + 15% of 400) = Rs. 460.
Then, ratio of increased Salary,
A:B:C = 105:330:460 = 21:66:92.

Alternative
100(A's salary)===5%↑===> 105(A's increased salary);
300 (B's salary)===10%↑===>330 (B's increased salary);
400 (C's salary)===15%↑===> 460 (C's increased salary).
Ratio of their increased salary = 105:330:480 = 21:66:92

Answer 2

Answer:

Step-by-step explanation:

Let A's Salary = Rs. 100

Then, B's Salary = Rs. 300

And, C's Salary = Rs 400

Salary has given in 1:3:4 ratio.

Now,

5% increase in A's Salary, 

A's new Salary = (100 + 5% of 100) = Rs. 105.

B's Salary increases by 10%, Then,

B's new Salary = (300 + 10% of 200) = Rs. 330.

C's Salary increases by 15%,

C's new Salary = (400 + 15% of 400) = Rs. 460.

Then, ratio of increased Salary,

A:B:C = 105:330:460 = 21:66:92.

Alternative

100(A's salary)===5%↑===> 105(A's increased salary);

300 (B's salary)===10%↑===>330 (B's increased salary);

400 (C's salary)===15%↑===> 460 (C's increased salary).

Ratio of their increased salary = 105:330:480 = 21:66:92

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