1) their students to participate in

 Tree planting activities, six (1) class went to the 40 to 120 trees,cheap UGG boots, tree planting,UGG boots cheap, after 2 hours to complete the rest of the tree with the ratio of 4:1. If this speed, but also planting a few hours to complete the task?

2) an express train and a climbing while bound from A to B, the known to express the whole journey takes 10 hours, climbing a 15 hour express train to reach the B immediately after the return,Discount UGG boots, and after a few hours and slow meet? (Super difficult questions)

3) Li's father to the mall to buy a color television with the purchase price. The manager said: Dad calculate the purchase price of this TV set it?

4) Let A △ B, said A, B, 4 times 3 times less that A △ B = 4A-3B, such as 3 △ 2 = 4 × 3-3 × 2 = 12-6 = 6, if known X △ (5 △ 2) = 46,UGG shoes, find the value of X.

5) 50 students to participate in party. The first scene of the girls shook hands with all the boys, the second scene of the girls shook hands not only a single male, the third scene of the girls not only a thin two boys shook hands, and so on, the last scene of the girls and 7 boys shook hands, and asked the 50 students in a few boys?

6) are known to line AB = 200 cm, point M is the end of the line AB; point C is the extension of line segment AB points, AC = 3BC, point D is to extend the line segment BA points AB AD = half

(1) find a long line segment BC

(2) find a long line DC

(3) is to ask those segments of the mid-point M