angel:

There were a total of 293 pears in three boxes.

When 30 pears were moved from Box A to Box B, and 22 pears were moved from Box B and Box C, there were twice as many pears in Box A as Box B and 18 more pears in Box C than Box A.
How many pears were there in Box B at first?

Box A [..........][..........][30]

Box B [.....[30]][22]

Box C [..........][.....[22]][18]

Total 293 Pears

Based on the above,

If 293 - 18 = 275 pears (5 units)
5 units -> 275 pears
1 unit -> 55 pears
Box B -> 55 + 22=77

There were 77 pears in box B.

angel:

The capacity of one cup and two bottles is 790 ml.

The capacity of two cups and one bottle is 620 ml.
What is the capacity of one cup and one bottle?

Kindly advice using models? Thank you very much.

[C][B][B] } 790ml
[C][C][B] } 620ml
[C][B] }?

Based on the above, the capacity of one cup and one bottle is:

If
[C][B][B] [C][B][B] } 790ml x 2=1580ml
[C][C][B] } 620ml

1580ml - 620ml = 3 bottles = 960ml
1 bottle = 960ml / 3 = 320ml
2 cups = 620ml - 320ml = 300ml
1 cup = 300ml / 2 = 150ml
1 cup & 1 bottle = 320ml + 150ml = 470ml

Therefore the capacity of one cup and one bottle is 470ml.

A great afternoon, anyone have the following papers to share:


1) Subjects: Math
2) Level: Sec 1 & Sec 2
3) Stream: Normal (Academic)
4) Topic: All Topics
5) Papers: All Papers

my email is [email protected]

Many thanks!

A great afternoon, anyone have the following papers to share:


1) Subjects: Math
2) Level: Sec 1 & Sec 2
3) Stream: Normal (Academic)
4) Topic: All Topics
5) Papers: All Papers

my email is [email protected]

Many thanks!