Вопрос школьника по предмету Математика
Одновременно в одном направления из одного посёлка вышел отряд туристов ,а из другого выехал велосипедист.Туристы шли со скоростью 5км.ч а скорость велосипедиста -16 км.ч .Через 4 ч велосипедист догнал туристов .Каким было расстояние между посёлками?
Ответ учителя по предмету Математика
1) 5 * 4 = 20 (км) — прошли туристы за 4 часа
2) 16 * 4 = 64 (км) — проехал велосипедист за 4 часа
3) 64 — 20 = 44 (км) — расстояние между поселками.
Ответ: 44 км.
или так:
1) 16 — 5 = 11 (км/ч) — скорость сближения
2) 11 * 4 = 44 (км) — расстояние между поселками
Ответ: 44 км.
Похожие вопросы от пользователей
1.Money is not the solution (of, for, to) every problem.
2.Planning involves setting targets (on, for, in) each department.
3.The withholding tax (on, for, of) wages was important in increasing the number of tax-payers.
4.The person planning a new firm should have definite ideas (on, about, for) profits, financing, advertising, market and customers.
5.We expect to make a large profit (in, with, on) this ideal.
6.This graph shows that mounting tendency (of, for, to) growth the stock market is stabilizing.
7.Marketing means determining and satisfying the needs (of, for, with) prospective customers.
8.Banks assist commerce by providing means (of, for, on) payment for both internal and international transactions.
9.The emphasis in the public sector is still mostly (to, on, for) expanding public control.
10.We have just placed an order (on, to, for) a new computer system with one of the major suppliers.
11.The factory workers have declared their intention (for, to, of) staying in until their requirements are fulfilled.
12.Industry is the basis (of, for, in) the country is productive potential.
13.Sometimes you may be offered a discount (on, to, for) something you buy at a shop.
14.There are many advantages (over, of, in) being able to speak a foreign language.
15.The fact that Jane was offered a job has no connection (between, with, to) the fact that her cousin is the managing director.
16.There are strong reasons (to, for, of) a social distance among people in organization.
17.The company has rejected the workers demands (on, for, of) a rise (in, with, of) pay.
18.Upward communication serves the purpose (for, on, of) acquiring accurate information (of, about, for) business activity.
19.I have a fixed term contract (on, with, between) the company and no guarantee (of, to, on) its extension when it ends in May.
20.During the last decade we experienced the fall (in, on, with) sales (for, of, on) our goods by almost 20%.