The purchase price of a commodity in 800 yuan is 1 200 yuan when it is sold. Later, due to the backlog of this product, the store was prepared to sell it at a discount, but if the profit rate was not less than 5%, it could be discounted at most.

Answer 7

The distance from Xiaoming's home to school is 2400 meters. If Xiaoming leaves home at 7: 00 a.m. and arrives at school between 7: 30 and 40, and the walking speed is m/min, the inequality group can be _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

The answer is 60m/min ~ 80m/min.

From A to B is 16km. If someone goes from A to B at a speed of 4km/h to 8km/h, it takes about ().

A. 1 ~ 2 hours B.2 ~ 3 hours

C.3 to 4 hours

Answer d