**Hahae wrote:**1. A delivery company charged $8 for every parcel delivered successfully and compensate its clients $2 for every parcel that was damaged. In July, the company had to deliver 200 parcels. If it earned a total of $1200, how many parcels were damaged in July?

200x$8=$1600

$(1600-1200)÷$(8+2)=400÷10=40

Number of parcels damaged in July =

__40__
__Check__
Number of parcels delivered successfully = (200-40)x$8= $1280

Number of parcels delivered damaged = 40x$2= $80

Total earnings in July = $(1280-80) = $1200

**Hahae wrote:**2. If Mr Tan buys 3 writing pads and 4 notebooks, he will have $2.75 left. If he buys 4 writing pads and 3 notebooks, he will have $3.25 left. Given that each notebook cost $1.25, find the total amount of money Mr Tan has.

W: Writing pads

N: Notebooks

3W+4N+$2.75 = 4W+3N+$3.25

Cost of 1 notebook = $1.25

3W+4(1.25)+2.75=4W+3(1.25)+3.25

3W+7.75=4W+7

W=0.75

3W+4N+2.75

3(0.75)+4(1.25)+2.75= 10

Total amount of money that Mr Tan has =

__$10__
**Hahae wrote:**3. If Mrs Lim bought 4 plates and 7 cups, she will have $10.75 left. If she wants to buy 7 plates and 4 cups, she will need another $8.45 more. Given that each plate costs $8.55, how much money did Mrs Lim have?

P: Plates

C: Cups

4P+7C+$10.75 = 7P+4C-$8.45

Since cost of 1 plate = $8.55

4(8.55)+7C+10.75 = 7(8.55)+4C-8.45

7C+44.95=4C+51.40

3C=6.45

C=$2.15

4P+7C+$10.75 = 4($8.55)+7($2.15)+$10.75 = $60

Amount of money that Mrs Lim had =

__$60__