
Hi,
Need help on P6 question. Appreciate it for all the help in advance.
Regards.
Source: Nanyang Primary
Hi,
Need help on P6 question. Appreciate it for all the help in advance.
Regards.
Source: Nanyang Primary
(a)
At first —
Box M —
pears : 18
lemons : 42
Box N —
pears : 36
lemons : 50
In the end —
Box M —
pears : 3u
lemons : 4u
Box N —
pears : 1p
lemons : 2p
3u + 1p ——-> 18 + 36 = 54
6u + 2p ——-> 108
4u + 2p ——-> 42 + 50 = 92
2u ——-> 16
1u ——-> 8
4u ——-> 32
(b)
3 x 8 + 1p = 24 + 1p ——-> 54
1p ——- 54 – 24 = 30
3u ——-> 24
30 – 24 = 6
Ans : (a) 32 lemons; (b) 6 more pears.
3u + 1p = 18 + 36
6u + 2p = 54 x 2 = 108
4u + 2p = 42 + 50
6u – 4u = 108 – 92
2u = 16
4u = 16 x 2 = 32 as (a)’s answer
1u = 16 / 2 = 8
3u = 8 x 3 = 24
1p = 54 – 24 = 30
30 – 24 = 6 as (b)’s answer
This is a Matrix question.
1. Pear = 18 + 36 = 54. Lemon = 42 + 50 = 92
2. Box M Pear 3u, Lemon 4u
Box M | Box N | total | |
Pear | 3u | 54 – 3u | 54 |
Lemon | 4u | 92 – 4u | 92 |
(54 – 3u)/1 = (92 – 4u) /2
108 – 6u = 92 – 4u
108 – 92 = 6u – 4u
2u = 16
1u = 16 ÷ 2 =8
a)
4u = 8 × 34= 32
b)
3u = 3 × 8 = 24
54 – 24 = 30
30 – 24 = 6 more pears
Hi Mr Khong,
Thank you for your prompt response.
However, there is something that I don’t understand about this statement:
(54 – 3u)/1 = (92 – 4u) /2
Why do we to divide by 2?
Thanks.