Yeo See Yeong.Is it me only who does not understand? Hmm...I understand 3/4 consists of 247 and 2/9.but how to convert 2/9 of remaining money into 2 units? Can slowly explain to me please?

What's left is the white color boxes = 1/4 of original total = 7u.

1/4 = 7u, so 3/4 = 21u

Also, we know that 3/4 = 2u+247. Hence 21u = 2u+247 So u = 13 Hence asher had 9u + 247 = 364

Excellent models drawn, Mister Yeo.

Q10. Total girls: 75% x 4 = 300% 300% - 100% = 200% 200%: 152 Total children: 100% + 300% = 400% 400%: 304 children Q11. 9u - 2u = 7u 1/4: 7u Total: 7u x 4 = 28u 28u - 9u = 19u 19u: 247 1u: 13 28u: 364 sweets

Done by my P5 girl. Hope she is correct !

Yes I think ur right. Ty

Yup. 2600.

Work backwards from 350. 350 + 250 = 60%. Therefore 100% = 1000. 1000 + 300 = 50%. Therefore 100% = 2600. Tio boh?

Yes, got it! Thanks!

Thanks Caleb...

thank u

I am afraid Tan Wen Dee had forgotten to half the formula (for the area of the circle) for the semi circle.

Yes Xavier Sng thank you so much, i have mangaged the sum. was a great help with Tan Wen Dee hint :) and thank you so much for reminding me too :)

On top of that, the radius of the smaller semicircle is 8 cm, not 5cm.

yup saw it :)

The difference in area required = 1/2 × 3.14 × (12×12 - 8×8) = 40 × 3.14 = 125.6 sq cm

Excellent, thank you Lesley.

swee :)

Alamak. Yes, tan wen dee made terrible careless error!

Dont worry Tan Wen Dee, we all make careless mistakes. I have made more than my fair share.

Me too ... no worries we learned from making mistakes :)

Hope the answer is correct !

thank u so much Pauline