iMath | Community

Irene Kong

Asked 9 years ago

SG Primary 6 Fractions

Pls help to solve this problem don't understand. Thanks

Replies 2

Soo Vei Li

You can start by drawing a bar to represent the number of crayons bought and then subdivide to show the amount he gave away.

6 years ago

Irene Kong

Thank Maggie lukes n vei li soo.

6 years ago

Hu Sophia

Asked 9 years ago

SG Primary 5 Statistics

Replies 6

Kim Soon Chin

(175-154)/(178-175)=21/3=7

6 years ago

Hu Sophia

Can explain why 175-154?

6 years ago

Kim Soon Chin

This is the amount of height other boys compensated for the boy who left. I didn't read the question carefully. The answer should be 7+1=8 Average(178x7+154)=175

6 years ago

Xavier Sng

It is like saying that the boy who left gave 175-154 = 21 cm of his height to the remaining boys to share since he is only 154cm but the average in the group was 175cm.

6 years ago

Kim Soon Chin

Actually he is 'returning' the height gain when he joined the group, to other boys after he left the group.

6 years ago

Hu Sophia

Thanks all

6 years ago

Jennifer Quilindo

Asked 9 years ago

SG Primary 6 Number and Algebra

Please help... Thanks!

Replies 3

Kim Soon Chin

(5P-10):(2P+4)=3:2 P=8 5P-10=30

6 years ago

Jennifer Quilindo

Thank u very much

6 years ago

Yeo See Yeong

6 years ago

Lay Lee Ong

Asked 9 years ago

SG Primary 6 Number and Algebra

Replies 2

Kim Soon Chin

Total spent = 3P (2P fr L n 1P fr J) Saving by J = 1P + 27 Saving by L = 0.5P + 13.5 Add together 3P + 1P + 27 + 0.5P + 13.5 = 216 P = 39 L has 2.5P + 13.5 = 111

6 years ago