Question

六年级应用题用方程解答：1.小方原有图书本数是小敏的4/5,两人各捐出10本后,小方的本数就是小敏的7/10.小方原有图

Answer 1

1、设小方原有图书x本,则小敏原有图书(5/4)x

x-10 = (7/10)[(5/4)x-10]

x = 24

2、设总重量是x克,则甲是(4/5)x克,乙是(1/5)x克

[(4/5)x - 10] :[(1/5)x + 10] = 7 :5

x = 600/13

3、设这本故事书友x页

x/12 - x/(12+8) = 2

x = 60

4、设甲数是x,则乙数是(x-1)/5,丙数是5x+1

x + (x-1)/5 + 5x+1 = 100

x = 16

(x-1)/5 = 3

5、设乙书架原有x本,则甲书架原有(5/6)x

(5/6)x - 154 = 4/7(x-154)

x = 252

(5/6)x = 210