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nevsk [136]
3 years ago
10

The ratio of Chris an iood Dom's ages is

Computers and Technology
1 answer:
irinina [24]3 years ago
8 0

Answer:

28 years

Explanation:

Let's represent present age of Chris and Dom as C and D respectively. Then since ratio of present age of Chris and Dom is 3:4. Therefore,

\frac{C}{D}=\frac{3}{4}

C=\frac{3}{4}D   ...(1)

Now, it is given that in 7 years their age ratio will become 4:5. Therefore,

\frac{C+7}{D+7}=\frac{4}{5}

5C+35=4D+28\\

Using value of C from equation(1),

5\times\frac{3}{4}D-4D=28-35

15D-16D=-28\\-D=-28\\ D=28

Thus, present age of Dom is 28 years.

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