Since it is CONSEQUTIVE and ODD numbers, the difference between them will be 2. ie B-A＝2, C-B＝2 and so on. Hence, C is equals to A+4 and E is equals to A+8.

A+A+4+A+8＝15y 3A + 12 ＝ 15y 3A ＝ 15y - 12 A ＝ 5y - 4

Thanks alot, Zhong Shu Hao!

welcome Joanne Sam!

Hi! Dyou have the ans? Is it 374cm?

Hi Jolyn Low, i got the answer...

Hi!! The ans is 386cm indeed! Pls ignore my working i did it wrong sorry! 😖

Is this a P5 qn? Thks

It's P6

Here you go. Know what to do when you encounter "more than" or "less than" because these models are pretty much tested frequently for P3 SA1

🙏 thank you so much!!! 👏 Appreciated!

Here you go!

Thank you! Thank you!!🙏👏👏

For Q3, 9jugs of water fills 5/8 of the tank. so 1 jug fills 5/72 of the tank. 14 jugs(amount of jugs used in q) will fill up 60/72 of the tank, which is 5/6 of the tank. In other words, 4 cups of water fills up 1/6 of the tank. Hence, the tank can hold 4x6＝24 cups of water.

Hi! Zhong Shu Hao, I agree with your solution but I guess you made some calculation error.. 14 x 5/72 is 70/72 and not 60/72. Which means that the remaining 4 cups can fill 2/72 of the tank. A cup can then fill1/144 of the tank which means you need 144 cups to fill the tank completely..

oh... yah ps. Brain short-circuit 😅

For the Q on the sqr, we can know that one side of the shaded sqr is 48/4＝12cm. At the same time, one length and one breath of the rectangle has the length of 20cm. BY OBSERVATION, the length of a rectangle is equals to one side of the sqr and one breath of a rectangle. Hence, side of sqr+2breadth＝20 12 + 2 breadth ＝ 20 2 breadth ＝8 breadth ＝ 4 length ＝ 4+ 12 ＝ 16cm.

I find these problems really nice. Do you mind me using these questions Serene Teo when I revise my students for their final year examinaton?

Sure Jojo Celestino

Thanks.. :)

Serene, I hv shared all these Qns with my girl. We hv worked out most of the question except the Qn on the "A box contain red, blue and green pens.....". Appreciate if u share with us the solution. Thanks in advance.

R represents red, B represnts blue, G represents green.

Thanks Shu Hao.

welcome 😊

Thanks

Thanks shu hao, this working able my gal to understand it clearly.

Haha thanks for your compliments! XD

By the way do u knw how to solve Q17?

Sure. Give me some time to produce the model :D

Thanks again

This is the working for part a. Believe part b will be more straight forward now :D