Question

Please help!!!! thanks

Answer 1

Step-by-step explanation:

make another column with the heading difference. now, the difference between the children's ages will always be the same. so now you have to make the ratio the same.

NOW:

Child A:Child B:difference

3: 2 : 1(3units-2 units)

10 years later

Child A:Child B:difference

7: 6. : 1(7 units-6 units)

since the difference us the same for both ratios, now we can compare between both sets of ratios.

take for example child A:

the number of units increased in 10 years is 7 units-3 units=4 units

4 units is 10 years

1 unit is

$10 \div 4 = 2.5$

and therefore one child is 5 years old and the other is 7 and a half.

NOTE: IT IS THE SAME IF YOU USED CHILD B.

take for example child B:

the number of units increased in 10 years is 6 units-2 units=4 units

and if you continue to solve, you will find that you arrive at the same answers.

hope this helps!!!!