Thanks...Adrian

5/9 pears Total->9u Pears-> 5u Apples->3u Oranges->1u Apples->3u=198 Total->9u= 198/3 x 9= 594(answer)

Model drawn as per Izam's answer above

Thank you.

Answer 8 is correct

I shall call the first symbol A and the second symbol B. Given A B = 32 A / B = 2 So A B A / B = 32 ×:2 A A = 64 A = 8 As 8 × 8 = 64. So answer is 3.

Robert Yeo This a primary 3 QN.. May not be able to comprehend algebra.. Its MCQ..so guess and check will be more appropriate

At P3, students may list the factors of 32: 1 & 32, 2 & 16 and 4 & 8. Only for factors 4 & 8 can we have 8/4 = 2.

if this is MCQ and you do not know how you should just work back using the answers given e.g. since answer is 8. 8x?=32 to find find the ? to check whether your correct you can do 32/8=4

Assuming that there are 12 chickens, we will have 24 legs. Since the total number of legs is 40, there are 16 not accounted for. To account for the 16 legs, we need to change 8 of the chickens to cows. So we have 4 chickens (8 legs) and 8 cows (32 legs). We can also use the guess and check method. Either method should be acceptable.

My guess and check method..

Why u r assuming 12 at e first place? Not 9.. not 10...

This one seems more reasonable

Yani June...there are 12 animals as the QN state.. Assumption will be based on the no of animals there.

Assumption method is a faster way to calculate ...

Noted w thnx

Izam. . E final ans is 8 cows n 4 chicks

Ur working looks gd

The concept of assuming all animals are of 1 type allows you to find the difference in the number of legs, and such that you can find out the answer in a straightforward way. Assuming all are chickens: 12 x 2 = 24 legs 40 - 24 = 16 extra legs 4 - 2 = 2 (ie. Cow has 2 more legs than chicken.) 16 / 2 = 8 (ie. 8 extra sets of 2 legs) 12 - 8 = 4 Hence, there are 4 chickens.

to do this u need to start with animal with lesser leg, which is chicken so u use total 40 legs / 2 = 20 animal we know only has 12 animals, so 20 - 12 = 8 means 8 animal has 4 legs and remaining 4 animals has 2 legs to confirm, (8X4) + (4X2) = 40 legs

Question asked for chicken, so assume all are cows. If question asked for cow, assume all are chicken. It is always the opposite, this was what my girl was taught in Sch.

A+B = 77 x 2 = 154 B+C = 84 x 2 = 168 A+C = 80 x 2 = 160 A+B+B+C+A+C = 154 + 168 + 160 2A + 2B + 2C = 482 A+B+C = 241 A = A+B+C - B - C A = 241 - 168 = 73

thank u for the fast response

dont understand the A=A+B+C-B-c part.

P5 students start to learn simple algebra Since it is about average, sum for both are: A+B = 77X2 = 154 B+C = 84X2 = 168 A+C = 80X2 =160 next, use two statements that can cancel out each other Since we want to find Alan’s mark, make sure A is not cancelled out. Let’s cancel out B, B = 154 - A B = 168 - C 154 - A = 168 - C C - A = 168 - 154 = 14 A + C = 160 statement two - statement 1, (A+C)-(C-A) = 160-14 2A = 146 A = 73

Thanks Dannis.

Hi, Fiona. Here is a model representation of how to obtain Alan's age. :)

Thanks Brandon My gal managed to do the sum after telling her the tips provided by all kind souls. thanks