Question

2 - 6y 5
The ages of Hari and Harry are in the ratio 5 : 7. Four years from HUW
their present ages.
7 The denominator of a rational number is greater than its numerator by 8. If the numerator is increased by 17
and the denominator is decreased by 1, the number obtained is Find the rational number.
aat the resulti,
e digits of t1
is the origi​

Answer 1

Step-by-step explanation:

The ages of Hari and Harry are in the ratio 5:7. Four years from now the ratio of their ages will be 3:4. Find the sum of their present ages.

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ANSWER

The ratio of Hari's and Harry's present ages is 5:7

So, let their ages be 5x and 7x

After 4 years their ages will be in ratio 3:4

Therefore,(5x+4)/(7x+4)=3/4

or, 4(5x+4)=3(7x+4)

or, 20x+16=21x+12

or, 16−12=21x−20x

or, 4=1x

or, x=4

Therefore, present age of Hari = 5x=(5×4)=20 years.

Present age of Harry =7x=(7×4)=28 years

The sum of their age is 28+20=48years

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