# 2題英文數學題(F.1) 急急急,,入入

識邊題就做邊題啦

1. ＄3200 is divided among Winnie , Tom and David. If Tom receives three times as much as Winnie, while David receives four times as much as Winnie,how much does Winnie receives ?

2. Bobby saves a fixed amount of money every say. He finds that the price of a model is ＄70 more than his savings in 5 days or ＄10 more than his saving in 9 days. How much does he save each day?

### 2 Answers

- 1 decade agoFavorite Answer
1.let Winnie receives money be y

Tom=3 times Winnie

Tom=3y

David=4 times Winnie

David=4y

3200= tom + david +winnie

3200=3y+4y+y

3200=8y

y=400

therefore winnie receives $400

2. let y be the money he save each day and n be the price of the model

5y +70=n (1)

9y +10=n (2)

sub (1) into (2)

5y +70 =9y +10

4y=60

y=15

therefore he save $15 each day

Source(s): 自己 - 1 decade ago
let the amount for winnie be x

Tom : 3x , David : 4x

3x+4x+x = 3200

8x = 3200

x = 400

∴winnie receives $ 400

let the amount he save be x

5x+70 = 9x+10

4x = 60

x= 15

∴he saves $ 15 everyday