(62+4)/5=66/5= 13... 1
Cost: (13+1) x30 =14x30 = 420 yuan;
Option 2: If 65 people take the big boat and the remaining 62+4-65= 1 people take the small boat, the cost is:13x30+1x 21= 411yuan.
Option 3: If all people (that is, 66 teachers, students and students) take a boat, then:
(62+4)/3=66/3=22
Then it will cost: 22x2 1=462 yuan;
Option 4: If 60 people take a big boat and the remaining 62+4-60=6 people take a small boat, then:
60/5= 12,6/3=2。
Then it will cost:12x30+2x21= 360+42 = 402 yuan.
It's not hard to know, 402
In primary school mathematics, the practical problems with quantitative relations are described in language or words, and the problems formed in this way are called application problems. Any application problem contains two parts. The first part is known conditions (conditions for short), and the second part is seeking problems (problems for short). The conditions and problems of application questions constitute the structure of application questions.
Application problems can be divided into general application problems and typical application problems.
An application problem with two or more operations without specific solving rules is called a general application problem. An application problem that has a special quantitative relationship and can be solved by specific steps and methods is called a typical application problem.