![\bf \boxed{-9}\rule[0.35em]{9em}{0.25pt}-2\rule[0.35em]{1em}{0.25pt}\stackrel{\stackrel{midpoint}{\downarrow }}{-1.5}\rule[0.35em]{1em}{0.25pt}-1\rule[0.35em]{2em}{0.25pt}0\rule[0.35em]{10em}{0.25pt}\boxed{6}](https://tex.z-dn.net/?f=%5Cbf%20%5Cboxed%7B-9%7D%5Crule%5B0.35em%5D%7B9em%7D%7B0.25pt%7D-2%5Crule%5B0.35em%5D%7B1em%7D%7B0.25pt%7D%5Cstackrel%7B%5Cstackrel%7Bmidpoint%7D%7B%5Cdownarrow%20%7D%7D%7B-1.5%7D%5Crule%5B0.35em%5D%7B1em%7D%7B0.25pt%7D-1%5Crule%5B0.35em%5D%7B2em%7D%7B0.25pt%7D0%5Crule%5B0.35em%5D%7B10em%7D%7B0.25pt%7D%5Cboxed%7B6%7D)
from -9---------------------------0------------------6, there are 9+6 units, namely 15, half that is 7.5, 7.5 units from -9 is -1.5.
Answer:
5%
Step-by-step explanation:
<u>price after discount :</u>
9 600 - 9 600×40%
= 5760
<u>Original price (price without profit) :</u>
let x be the original price of the device.
x + x × 20% = 5760
Then
x = (5 760×100)÷120
= 4 800
<u>Original price increased by 30% :</u>
4 800 + 4 800×30%
= 6 240
<u>the discount needed to increase the profit by 10% :</u>
[(9 600-6 240)÷9 600]×100
= 35%
Then
to increase the profit by 10% ,we have to reduce
the percent of discount to :
40% - 35%
= 5%
2/3 + 5/6
= 4/6 + 5/6
= 9/6
= 3/2
A. 3/2