From your working, a is not 300. A is equals 300+ b

you are right. But how do know b is how much?

A is 300 more than B, which is in turn 100 more than C So 300 + 100 = 400

noted. Thank you so much for your help.

A=b +300 Change c+100= b So c. =b-100 So a > c by 400

maybe adding a block to A's balance can make it easier to see the difference?

Hope u can read my ugly drawing .. Is it P3 question?

It is P2

Use comparison model, should be able to see clearer

A = 300 + B Since B = C + 100, substitute it in the above equation A = 300 + C + 100 A - C = 300 + 100 = 400 (ans)

300+100=400

Hi, when 2 pupils are taken from the classes with 12 each, those pupils fill up the class of 6 to 10 (so 4 there) and created another class of 10. So in all, 14 pupils were pulled from the previous classes of 12 each. How many classes do they come from? Since each class gives 2, then 14/2 = 7 classes. Answer: 7x12 + 6 = 90

Hi, but I do not understand how you get 14 pupils?

4 that made the class of 6 become 10 and the additional class of 10. 4+10=14.

8 squares from left to right makes it 64 cm. (9 would be 72) So 3 squares from top to bottom. So breadth = 3×8 + 3 = 27 cm

8 X 3 squares. Length of rect is 70, Max squares is 8 cos 8 X 8 64cm, breadth 3 X 8 24, plus 3cm is 27cm.

70 / 8 = 8 r 6 length has 8 sq 24 / 8 = 3 breadth has 3 sq 3 x 8 = 24 24 + 3 = 27

Thanks all! Careless mistake on my part.

(Mina)-------------(Kumar) 3u-78-------->>>. 6u÷6 3u-78->u 2u->78 u=39 Both had 9u-> 9×39= 351(ans)

Thaks

Not at all