Question

One year ago ratio of A's age to B's age was 5:6 after 4 years , this ratio becomes 6:7 how old is A?

Answer 1

Answer:

it's easy you need to try First

Answer 2

A 's age is 26 years

Step-by-step explanation:

Let A's present age be x

Let B's present age be y

A's age 1 year ago = x-1

B's age 1 year ago = y-1

One year ago ratio of A's age to B's age was 5:6

So,$\frac{x-1}{y-1}=\frac{5}{6}$

$6x-6=5y-5$

$6x-5y=1$ --- 1

A's age after 4 years ago = x+4

B's age after 4 years ago = y+4

After 4 years , this ratio becomes 6:7

$\frac{x+4}{y+4}=\frac{6}{7}$

$7x+28=6y+24$

$7x-6y=-4$ ---2

Plot 1 and 2 on graph

$6x-5y=1$ --- Purple

$7x-6y=-4$ --- Black

Intersection point will provide the solution

(x,y)=(26,31)

Hence A 's age is 26 years

#Learn more:

One year ago, ratio of harry and peter age’s was 5 : 6 respectively. after 4 years, this ratio becomes 6 : 7. how old is peter

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