以下題請各位幫忙列式
1) A man travelled by car for 2 hours and then walked 1 km to a friend's house. His total trip was 65 km. What was the speed of the car?
2) A and B started at the same time from two towns 162 km apart. They met in hours. If A's speed was 12 km per hour, what was B's speed?
3) A certain number of sweets were equally divided damong 8boys. Each of them go 9 sweets and there 4left. What was the number of sweets?
數學列式幫忙下
2007-07-12 8:49 pm
回答 (3)
2007-07-12 9:01 pm
✔ 最佳答案
1) (65-1)/265-1=64km( the distance that the car travelled)
64km / 2 hrs =32 km/hr
therefiore ,the speed of the car is 32km/hr
2)error: 2 unknowns
in?hours??I dun know
3)(8*9)+4
8*9 = 72
72+4 = 76
參考: me
2007-07-12 9:04 pm
1) Let the speed of the car be x km
2x + 1 = 65
x = 32
The speed of the car be 32km/hr
3) 9 * 8 + 4 76
2) 唔識 = = sorry
2x + 1 = 65
x = 32
The speed of the car be 32km/hr
3) 9 * 8 + 4 76
2) 唔識 = = sorry
2007-07-12 9:00 pm
1)let X be the speed of the car
X=(65-1)/2
3)let X be the number of sweets
X=8X9+4
X=(65-1)/2
3)let X be the number of sweets
X=8X9+4
收錄日期: 2021-04-13 19:23:46
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https://hk.answers.yahoo.com/question/index?qid=20070712000051KK01703