Two cars A and B 250 km apart are travelling towards each other on the same road.Car A travels at 55 km/h while car B travels at 70 km/h.
When will they meet on the road?答案係2小時..條方程式應該點set?help me,plz
set the equation(方程式)
2007-10-28 5:58 am
回答 (3)
2007-10-28 6:04 am
✔ 最佳答案
Let x be the time taken55x + 70x =250
125x =250
x=2
Therefore they'll meet in 2 hours.
2007-10-28 6:06 am
250/(55+70)
=250/125
=2
2007-10-27 22:08:01 補充：
估唔到20秒有三個人答 -.-
=250/125
=2
2007-10-27 22:08:01 補充：
估唔到20秒有三個人答 -.-
參考: me
2007-10-28 6:05 am
Let x be the hour the meet togather,
250= 55x+ 70x
250= 125x
x= 2
so they will meet after 2 hours.
250= 55x+ 70x
250= 125x
x= 2
so they will meet after 2 hours.
收錄日期: 2021-04-13 14:13:13
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