To give 75g more to each student, we need 1350g. So there is 1350/75 = 18 students.....

2 additional belts cost $34. So, 1 belt cost $17. So, he had 3×$17 + $21 = $72

Got it. Thanks.

P4 not yet learn algebra

How to draw a model to show this?

21+13=34 (excess+shortage) 5 - 3 = 2 34 / 2 = 17 3 x 17 = 51 51 + 21 = 72 (ans)

Your child should at least let us see that she or he has attempted, if not giving an answer will not do him or her any good. No offence.

In some schools at P4 level, model drawing is not required n their teachers may teach them using algebra method.

Cost of 3 belts + $13 + $21 = cost of 5 belts. :)

2 u = 21+13

1u=44/2 =22 . 5 u = 5x 22 =110, $110 - $13 =$97

use the difference between 3 belts and 5 belts which is 2 Add both money $21 + $13 = 34 So, per belt cost $17 bought 3 belts still left $21 means: (3 X $17) + $21 = $72

Yes. Will guide her on how to look at the question and solve it

https://youtu.be/UwvWEu2j7tM You may refer to this video. A similar concept.

https://youtu.be/UwvWEu2j7tM Look at this video..similar idea

Good. That's the way to go.

Thank you Vanessa Wong

You are welcome!

Got it. Thanks

Answer cnnt be 30. 2u = 6. So 1u=3. Since she was given exact $ to buy 5, 5u=5×3=$15.

Are u sure answer is $30?

$6 left supposed to be the price of 2 files... 1 file-.>>$3

I not sure is $30

Ok tks 4 all ur help ... Have a nice day to u all

Yes. $ 15.

Shld be $15

Thank you!