Zwen's answer to Owen's Primary 5 Maths Whole Numbers Singapore question.
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
Let the equal number bought for each red and blue be x.
Date Posted:
2 years ago
End= 42 (blue)
End= 42x3=126(Red)
Total at the end = 126+42 =168 (End)
FIRST total=128
End-FIRST = 168-128= 40 ( bought red+blue)
Red bought = 40 divide 2= 20
Red at first = 126 subtract- 20= 106 （at first)
End= 42x3=126(Red)
Total at the end = 126+42 =168 (End)
FIRST total=128
End-FIRST = 168-128= 40 ( bought red+blue)
Red bought = 40 divide 2= 20
Red at first = 126 subtract- 20= 106 （at first)
Also can
360 Tutoring Program