Is this correct way ???

Yes, you are correct. Well done.

Thank u 😃

Please don't thank me, you were the one who did all the work. 😃

But you are the one who checked my work correctly 👍

That is the easy part for me ☺ please do keep it up!

I would calculate the volume of the blue part LxBxH -> 58x10x29 -> 16820cm3. Volume of the red part is 51600-16820=4780cm3. Apologies, cm3 is cubic center meter. I cannot find superscript on iPhone.

Ok I understand now. Thank you thank u :)

Area of the 2 green triangles are the same. Area of 1 green triangle + area of 1 red triangle = 1/2 area of rectangle.

Hence, area of unshaded part= 1/2 Area of rectangle - 38 = 0.5 x 36 x 19 - 38 = 304

The area of 38 square cm must be subtracted twice from half the area of the rectangle because the green triangle and the red triangle overlap one another over the 38 square cm. Hence the unshaded area should be 0.5 × 36 × 19 - 2 × 38 = 266 square cm.

hi Xavier Sng why did u multiply by 2

Is there a simpler method pl?how do you know must use set?

Good morning Wahidah Khan. 1/3 of items were sold while 2/3 of them were left.

Good morning Gek Poh. The question informs us that for every 7 items sold, 3 were purses and 4 were wallets.

oh yes. got it. thks

Thank you.

We use ratio. 3 x 39 : 4 x 26 = 9:8. (9+8)x7x2/1=238

Wow....

Thks all for the problem solving

This is a unit and value q. Now I understand. Thanks

Good job, Gek Poh. Thank you.

Greatly appreciated. Thank you

Please don't mention it. Regards

Don't understand how to get 5/3?

Faizal's speed is represented by 5 parts while the difference in speeds is represented by 3 parts.

For such q..is there a technique to it? What must children pay attention to for speed related q?