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Stells [14]
3 years ago
14

Obi's age is twice oba's age 4 years ago obi was three times as old as oba. find their ages​

Mathematics
2 answers:
frutty [35]3 years ago
8 0

Answer:

Obi's age is 18 and Oba's age is 9

Step-by-step explanation:

Let Obi's age be x and Oba's age be y

<u><em>Condition 1:</em></u>

x = 2y -----------(1)

<u><em>Condition 2:</em></u>

(x-4) = 3(y-4)

=> x -4 = 3y-12

=> x - 3y = -9  -----(2)

<u><em>Putting eq (1) in (2)</em></u>

2y - 3y = -9

=> -y = -9

=> y = 9

Now,

x = 2y

=> x = 2(9)

=>  x= 18

maxonik [38]3 years ago
5 0

Answer:

8\\4

Step-by-step explanation:

Obi's age is x.

Oba's age is 2x.

4 years ago, Obi's age was x-4.

4 years after, Obi's age is 2x-4

3 times more than Oba's, so 3(x-4)

2x - 4 = 3( x - 4)

2x - 4 = 3x-12

2x - 3x = -12+4

-1x=-8

x=8

x-4\\(8)-4=4

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