travel
receive
expense
3 km and below
8 yuan
More than 3 km, one way, each additional 1 km.
1.60 yuan
More than 3 km, round trip, each additional 1 km.
1.20 yuan
1. Lili takes a taxi from home to grandma's. 17.6 yuan. How many kilometers is it from Lili's home to Grandma's?
Mr. Wang took a document from the school to the personnel bureau 6 kilometers away and returned to the school immediately. How can he get a better ride experience? How much do I have to pay for taking a taxi?
Analysis and answer: (1), in this question, because you have to pay the fare for traveling 3 kilometers or less in 8 yuan. And Li Li * * * paid 17.6 yuan, which is greater than that of 8 yuan, so we can know that Li Li's bus journey is more than 3 kilometers. Because it is more than 3 kilometers, every increase of 1 kilometer will cost 1.6 yuan, while 17.6-8.
=
9.6 (yuan), 9.6÷ 1.6
=
6 (km). So the distance between Lili's house and grandma's house is: 6.
+
three
=
9 (km).
(2) Because it is more than 3 kilometers, you have to pay 1. 20 yuan for each additional 1 kilometer for round trip and 1.60 yuan for each additional1kilometer for one way. Therefore, it is more appropriate for Mr. Wang to go to the personnel bureau to get the information and go back to school by taxi immediately. Because I have to pay the taxi fare in 8 yuan for a 3-kilometer journey, Miss Wang has to go back and forth:
6×2
=
12 (km), excluding 3km, plus: 12-3.
=
9 kilometers, Mr. Wang needs to pay the taxi fare: 1.20×9=
10.8
(yuan), so the taxi fare that Miss Wang has to pay is: 10.8+8= 18.8 (yuan).
Hope to adopt!
Difficulties: How to determine the point M? Because the side lengths of the left right-angled triangle are 3, 4 and 5 respective