2x 4+6x=35
x=2.5
2x = 2× 2.5 = 5 A: the load of small trucks is 2.5 tons, and that of large trucks is 5 tons.
2. Solution: There are X chickens in the first cage, but there are (84-x) chickens in the second cage.
x- 1/5 x=84-x-3/7 (84-x)
4/5 times = 84 x 36+3/7 times
4/5 x+4/7 x=48
x=35
84-35 = 49 (only)
A: There are 35 chickens in cage A and 49 chickens in cage B. ..
3. Solution: 6 ÷ (3/10-2/15) =180 (page)
180× 7/10 =126 (page)
A: Xiaohua needs to read page 126 again.
4. Answer: The whole journey of Line A takes X hours.
∵ Second-line whole journey 12 hours.
When did the two cars meet?
12× (1-5/8) = 9/2 hours.
Then 9/2 (1/x+112) =1.
1/x =2/9 - 1/ 12
X = 7.2 A: It takes 7.2 hours for Party A and Party B to complete the journey.
5. Solution: (8× 3000+15× 4000 )× (1+0.2%+0.35%) = 84462 (yuan)
84462+70.5 = 84532.5 (Yuan)
9× 3000× (1-0.2%-0.35%) = 26851.5 (yuan)
Suppose the current price of B shares is X yuan.
x×4000( 1-0.2%-0.355)+2685 1.5 = 84532.5
x= 14.5
( 15- 14.5)÷ 15≈3.3%
A: B shares fell by 3.3%.