Thank you so much Adrian Ng...

What concept is this? I cannot get it...

Ok thanks!

More than/ less than using unitary method. Can draw model if u wan but this is easier. Use the common multiple of 5 n 2.

For students who need something visual to start off so that they can understand the relationship between the quantities in the problem...

Thanks all! Very helpful indeed!

Nice and clear model .. Thks Vei Li Soo..

ok thank you very much

Since the base of the two triangles are equal and their heights add up to 15 cm, the total area of the two triangles = 1/2*7*15.

This should be 7×15×1/2

Ans is 52.5cm2

Hey Jacqueline Teo Mei Hui, how did you get 11x15+54?

Caleb Tey 292 is the total no of mangoes. John din sell all the mangoes. Only 15u + 54. Same for oranges.

Good one. Thanks.

Aiyah.. make myself so worried before my sleep..u seriously don't understand. I cannot get 1u= 11

Gek Poh, in the 'after' model, you can see that the 3 units (green) = 33, so 1 unit = 33/3 = 11.

Where does the 18 come from madam?

Why you me 72 into 3 parts?

72 is divided by 4 so that i can represent 3-quarters being sold. 72/4 = 18. 3-quarters of mangoes sold means 3-quarters of the units as well as 3-quarters of 72 being sold.

So for such questions. . When they say 72 more ..I need to also work on it given that 3 quarters sold. I work till the part where 72+15= 3 units. That's why cannot get 1u=11

Thank you very much for helping. ...

Thanks every one for helping me...

Find total area of square, hence find the length of the side. Answer : 13cm

Thank you