P5/P6: Ratio : Difference Unchanged (Age)

Age comparison questions are common in P4 but in P5 ratio will be used(instead of fractions or multiples) to compare the ages.

These questions requires the concept of "Difference Unchanged".
Similar questions can be viewed here.

Such before and after questions will usually appear in Paper 2 of P5 exams.

Caculator usage is allowed.

The ratio of Hannah's age to Grace's age was 5:6 at first.

10 years ago, the ratio of their age was 5:8.

How old is Grace now?

If the above question is easy, try to do the more challenging question below.

The question below will randomize with different numbers every hour. 

Copy below question down before making attempt.

Click if above box appears blank

P4/P5 Math: Before and After Age ( Multiples given at First and Total give at the End)

Such questions about age, requires students to understand that the age gap remains constant (ie constant difference) and that both ages need to add (or subtract) the same amount when talking about the number of years to the future (or the past).

A comparison using multiples will be given at first.
A total of the sum of the ages is also provided at the end (either a few years into the future or to the past).

Such "before and after" questions usually appear in Section C of P4 and Paper 1 of P5.
Calculator usage is not allowed (for P5).

Similar questions such as this(but not dealing with age) can also be found "here".

Ben is thrice as old as Alan now.

In 3 years time, Ben and Alan have a total combined age of 54.

How old is Ben now?

If the above question is easy, try to do the more challenging question below.

The question below will randomize with different numbers every hour. 

Copy below question down before making attempt.

Click if above box appears blank