Lau Jia En Ashley's answer to Azlyn Rai's Primary 4 Maths question.
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
a hint...
in 5 years,
father age = father current age + 5
mother age = mother current age + 5
junxi age = junxi current age + 5
so the total of their ages in 5 years
= father age + mother age + junxi age
= father current age + 5 + mother current age + 5 + junxi current age + 5
= sum of all current ages + 15
in 5 years,
father age = father current age + 5
mother age = mother current age + 5
junxi age = junxi current age + 5
so the total of their ages in 5 years
= father age + mother age + junxi age
= father current age + 5 + mother current age + 5 + junxi current age + 5
= sum of all current ages + 15
Date Posted:
6 years ago
360 Tutoring Program