x-X*(1+10%)*(1-10%)=5
X=500元
一种石英表,先涨价百分之十,然后再降价百分之是,这时售价降低了5元,原价是多少元?
一种石英表,先涨价百分之十,然后再降价百分之是,这时售价降低了5元,原价是多少元?
数学人气:873 ℃时间:2019-11-14 09:42:13
优质解答
我来回答
类似推荐
猜你喜欢
- 1what did you do this morning?和what did you have this morning?do是干什么了?have是吃什么了的意思吗?
- 2(100分之1-1)x (99分之一-1)...(3分之一-1)x(2分之一-1)
- 3设{an}是等差数列,{bn}是各项都为正数的等比数列,且a1=b1=1,a3+b5=21,a5+b3=13.
- 4What books do you like reading?Which book would you like to read?
- 5they are right over
- 6June and I were both poor when we were young.At that time,June always said,“ If I got rich,I would buy a bigger apartmen
- 7如图,CD⊥AB,BE⊥AC,垂足为D、E,BE、CD相交于点O,OB=OC,求证:∠1=∠2.
- 8什么东西是1立方分米?
- 9已知抛物线经过A(2,-2)与点B(-1,-8),在下列两种情况下,分别求出抛物线的函数关系式
- 10“为什么会这样”用英语怎么说