Question

Present age of meenu and mukul are in the ratio 3:4. After five years from now the ratio of their ages will be 4:5. Find their present age.

Answer 1

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Here is the solution:

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The ratio of Meenu and Mukul = 3 : 4

Define x:

Let x be the constant ratio

Meenu and Mukul = 3x : 4x

Form equation and solve for x:

(3x + 5) / ( 4x + 5) = 4 / 5

Cross multiply:

5(3x + 5) = 4(4x + 5)

Distribute 5 and 4:

15x + 25 = 16x + 20

Simplify:

x = 5

Find their present age:

Meenu = 3x = 3(5) = 15

Mukul = 4x = 4(5) = 20

Answer: Meenu is 15 years old and Mukul is 20 years old

Answer 2

hi, gens here is ur sweet answer.
Given their age ratio of meenu and mukul is 3:4

so let meenu age be 3x
then mukul age will be 4x
according to questions 5 years from now will be 5 years will put to both age so, it will be 3x+5and 4x+5and it is given that their age after 5 years is 4:5

so, 3x+5/4x+5=4/5
5(3x+5)=4(4x+5) cross multiplying
15x+25=16x+20
15x-16x=20-25
-x=-5
x=5
so, meenu age will be 3×5=15years
and mukul will be 4×5=20years