1/4 = 3/12 3/12 + 5/12 = 8/12 12/12 - 8/12 = 4/12 4/12= 1/3 (ans)

Joyce ate=1/4 X 3/3= 3/12 Sister Ate= 5/12 Total ate = 3/12 + 5/12= 8/12 Fraction left= 12/12-8/12=4/12=1/3

Start: B:R = 3:8 End: B:R = 4:1 = 8:2 because ¼ of 8u of red that remained is 2u. Hence 8u-3u=5u is the 65 blue added. The rest should be straight forward.

Thanks so much for your help.

Welcome!!

I got my boy to solve it. Hope it helps.

Thanks a lot, my girl can understand !

I think P4 cannot solve by algebra method

Diff in no. of sweets =3, diff in remainder = 105, so no. of children = 35

Good.

Use unitary concept then.

https://youtu.be/BZfCje2p5JY Try this. A similar concept

110-5=105 7-4=3 105/3=35

Yup. Think exposure. Left n left Short n short Left n short questions.

Thanks Sofie Teo. But use calculator, 496÷80×100 = $ 620. 😄😮

Confuse liao...

Oops sorry I wrote wrongly by accident.

Np. Appreciate your help.

You can also convert percentage into fraction, then use unitary concept to solve it.

Wow.. thanks! 👍

My kid does it since he is too free. Haha

Hi, we can simply reverse the story. 240 - 42 + 28 = 226, which is the total at first. 226÷2= 113, each at first.

Hope it helps u 2 continue where I have stopped.

Tks all!