Thanks so much Adrain!

Am I right to say that if I tilt tank A, the Height is also 15?

If we tilt Tank A, the base area will be different. Its no longer 15x20.

sorry, my method seems more algebra-like.. hopefully someone can help u w a non-algebra solution.

Thanks Vera!

Look up Tan Wei Qianq youtube maths puzzle solution. He used model method to illustrate this qn which I thought was very well done

Thanks Tiong Beng!

Can't find... Can give the key words to search for the video? Tia!

Try volume. Just saw it under Tan Weiqiang you tube

http://youtu.be/-88a57NashI This video

Many thanks Tiong Beng Sim and Mayuree Thongpan for the kind affirmation. I am really happy my videos are helping. Cheers and many thanks for the motivation once again.

I must say..I am very very thankful to my mentors..I'm pretty sure they wouldn't want me to name them..but I would still like to say this..THANK YOU!!! :)

If Ann paid 25% of the total share of Ben and Calvin, you can imagine it as Ann paying 1 unit while Ben and Calvin paid a total of 4 units. This tells you that the present cost 5 units and that Ann paid for 1/5 of its price.. If Ben paid 20% of the total price that Ann and Calvin paid, then Ben paid for 1 unit while Ann and Calvin paid a total of 5 units. In this case, the present cost 6 units which means Ben paid for 1/6 of it. Ann paid for 1/5, Ben paid for 1/6, to find Calvin simply add Ann and Ben then subtract from 1 whole.. Calvin then paid for 19/30 of the present.. The difference between the amount Calvin and Ben paid is $35.. Thus, 19/30 - 5/30 = 14/30.. 14 units must be $35. 1 unit must be $2.50 30 units is $75.. The present cost $75.

Thank u so much. It's very easy to understand. Will explain to my gal 😊 thanks again.

Wow...I like the explanation. I understand fully...

No problem.. Hope it helps..

I totally agree with u @Gek Poh. I explained to my gal using @JoJo Celestino's explanation n she got it immediately. Thanks again Jojo! 😊💪🏻

Ms Linda Chen-Foong, you are being very kind.. Thank you.. I guess it helps that I teach P5 and P6 students.. :)

This is really awesome! Please just call me Linda 😊😊 your students are so lucky to hv u as their teacher 😄💪🏻

Wow thanks Linda! :)

Cheers!!

Oh! The question didn't say that the square is overlapped with the rectangle. Will try another way.

Thank you so much ya! Will explain it to my gal 😊 she said the figures are overlapping n the teacher told them to draw on their own from reading the question. Thanks again! ✌🏻️✌🏻