take the total salary to be 100%, since the taxes are 20% subtract 20% from 100% to get 80% which will represent the left over after the taxes have been taken so say if 100%=$1200 what about 80% 80times 1200 then divide by 100.

7 0

3 years ago

Alex sold 330 candy bars, milk chocolate candy bars sold for $2 each and white chocolate candy bars sold for $3 each. Alex sold

Alinara [238K]

Answer:

<em>Alex sold 330 white chocolate bars</em>

Step-by-step explanation:

let the milk chocolate candy be x and the white chocolate candy be y. then

then 2x+3y=990----1)

x+y=330-----2)

from eq 2) ⇒ x=330-y---------3)

Putting eq 3 in eq 1

2(330-y) +3y=990

660-2y+3y=990

y=990-660=330-----------4)

Putting eq4 in eq1

2x+3(330)=990

2x+990=990

2x=990-990

2x=0

x=0---------------------------5)

4 0

3 years ago

During last year Adam's height increased from 125 cm to 135 cm. By how many percents did it change?

arlik [135]

he increase from 125cm to 135cm

first step :

$135 - 125 = 10cm$

second step :

percents he change is

$\frac{10 \times 100\%}{ 125} = 8\%$

6 0

3 years ago

Read 2 more answers

The equation of a line perpendicular to y=3x-1 and goes through (0,2)

Vaselesa [24]

Answer:

y = $-\frac{1}{3}$ x + 2

Step-by-step explanation:

Find the reciprocal change the sign of the gradient (m=3):

$-\frac{1}{3}$

y = $-\frac{1}{3}$ x + c

The intersect is 2, so c = 2

Final answer: y = $-\frac{1}{3}$ x + 2

3 0

2 years ago