Wow! Thank a lot, Raymond! Appreciate it a lot

Do you happen to know how to do this too?

Is it like this?

Follow similar steps for (iii), you should be fine

Hola Angeline, Your answers to question 2 are correct. Perhaps a suggestion. If you are leaving your answers in decimal, just plug the numbers into your calculator without the step that shows decimals in both the numerator and the denominator of a fraction. If you prefer leaving your answers in fractions, you can work on shifting the decimal places until you are left with simple integers. That will make your working cleaner. This forum is for primary school mathematics though.

Oops! Sorry! But all of you are so intelligent.. Can't help it but to seek your help too.... Thanks so much, Raymond and Xavier!:)

Don't shortchange yourself, Angeline. I am sure you are very intelligent too, as you had solved the question.

Please don't mention it, just making a small contribution. By helping I get to revisit the topics that may be rusty. Thank you very much.

Sorry I cannot provide a detailed drawing with explanation. Essentially two sides of the isos triangle is actually half the diameter of the quadrant and rectangle. This means it can be made up of shaded area A and the unshaded region to the left of B. Anyway you need to find the shades area I drew which is simply quadrant - big triangle Then minus the small isos triangle. That's all. See if u can figure out what I mean

Hola Suzzie. Eugene has provided the easiest approach. This question has appeared a few times in this forum. Just scroll down and you will find the solutions from various contributors.

Sorry Eugene Ng Ming Teck I don't quite understand your explanation but someone showing me this. Is this correct?

Hi Xavier Sng think I saw this question before but can't find it now as the thread is going fast. Hopefully someone can tag.

The working you posted is correct.

Thanks Xavier Sng

Hola Suzzie. please check the question posted on 8 August at 22:23. I am so sorry I am pretty much a computer retard so I have no inkling how I can tag that question here.

It's ok. Thanks Xavier Sng I understand that solution is good enough.

Excellent. You are more than welcome. Thank you.

% more white shells than brown shells = (5 - 2) / 2 x 100% = 150%

Thank you. I'm learning from these tricky questions too.

Haha! It's a win-win then! Thanks!

The model and steps are done correctly. Just need to find the number of $2 notes and $5 notes left, then find its values to add them together.

Thanks! I'm just a little confused about where the 6 pieces of $2 notes go...

You're welcomed. Suggest the student to draw the model bigger to visualise better, also to take note of time spent.

Thanks! He actually got the solution.. I just wasn't sure if it was correct, cos the answer scheme showed a different answer.

In the end, no of $5 notes = 2 units, no of $2 notes = 6 units. Working backwards, at first, no of $5 notes = 5 units, no of $2 notes = 6 units - 6. 148+6 = 11 units. 1 unit = 14. In the end, no of $5 notes = 14x2=28. No of $2 notes = 14x6=84. Total value of money= 28x5 + 84x2 = 140+168 = $308

In 1 hour Tom can clean 1/3 of the tank so that means Jerry can clean 2/3 of the tank in 1 hr. So if Jerry can clean 2/3 of the tank in one hour, it means he needs 1hr 30 min to clean the tank on his own.

Various representations of 1 hr 30 min such as 1.5 hr or 1 1/2 hr is also accepted.

Thank u

You are most welcome.

Tom and jerry takes 1 hour to clean 1 tank. In 3 hours they can clean 3 tanks together. Of which 1 is cleaned by tom. Means jerry takes 3 hours to clean 2 tanks. Meaning jerry takes 1.5hrs to clean 1 tank.