The age of Lakota and a dorje are in the ratio 7:5 ten years hence the ratio of their age will be 9:7 find their present age
Answers
Answered by
5
Let ratios be x
7x+10/(5x+10)=9/7
49x+70= 45x+90
49x-45x= 90-70
4x= 20
x= 5
Lakotas age = 7*5 = 35 YRS
Dorje age = 5*5= 25 yrs
7x+10/(5x+10)=9/7
49x+70= 45x+90
49x-45x= 90-70
4x= 20
x= 5
Lakotas age = 7*5 = 35 YRS
Dorje age = 5*5= 25 yrs
Answered by
3
hello frnd!
here's ur answer...
let the present age of Lakota and dorje be 7x and 5x.
after 10yrs there age will be 9x and 7x.
therefore 7x+10+5x+10=9x+7x
→12x+15=16x
→12x-16x=-15
→-4x=-15
→x=-15/-4
→x=5
hence x is 5.
therefore Lakota's present age=7x
=7×5
=35yrs
dorje's present age=5x
=5×5
=25yrs
hope this helps...!
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here's ur answer...
let the present age of Lakota and dorje be 7x and 5x.
after 10yrs there age will be 9x and 7x.
therefore 7x+10+5x+10=9x+7x
→12x+15=16x
→12x-16x=-15
→-4x=-15
→x=-15/-4
→x=5
hence x is 5.
therefore Lakota's present age=7x
=7×5
=35yrs
dorje's present age=5x
=5×5
=25yrs
hope this helps...!
___☺___☺☺☺___☺___
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