HELP ASAP PLEASE i’ll give u brainliest Mary Lou has a part-time job at
Reese's Department Store. She
earned a total of $200 in 3 wk. During the third week, she earned $60
more than during the second week and $40 more than during the first!
week. How much money did Mary Lou earn in each of the 3 wk?

1st Week-60

2nd Week-40

3rd Week-100

x=Amount During Second Week

(x)+(x+20)+(x+60)=200

3x+80=200

3x=120

x=40

1st Week=x+20=60

2nd Week=x=40

3rd Week=x+60=100 :)

During 3rd week, she earned $100, during second week she earned $40 and during 1st week she earned $60.

Step-by-step explanation:

Let money she earned in 1st week be x, 2nd week be y and 3rd week be z.

z = 60+y

z = 40+ x

now,

60+y = 40+ x

or, y = 40+x-60

or, y = x-20

Now,

x + y + z = 200

or, x + x - 20 + 40 + x = 200

or, 3x + 20 = 200

or, 3x = 180

so, x = $60

Now,

y = x-20

or, y = 60-20

so, y = $40

Now,

z = 60+y

or, z = 60+40

so, z = $100

13

step-by-step explanation:

169-1=168

168-3=165

165-5=160

160-7=153

153-9=144

144-11=133

133-13=120

120-15=105

105-17=88

88-19=69

69-21=48

48-23=25

25-25=0

since it took 13times to completely subtract it hence its square root is 13