Well first of all the shorter pipe would be 160ft bc 120/3 is 40 and 40*4 is 160 so the shorter piece is 160ft and 160+12 is 172 so the longer piece of pipe would be 172ft

I’m pretty sure I’m correct, lemme know if I’m not
Hope this helps :)

6 0

3 years ago

Two mechanics worked on a car. the first mechanic worked for 5 hours, and the second mechanic worked for 15 hours. together they

Ksenya-84 [330]

Alright, lets get started.

Suppose first mechanic charges= x

So, second mechanic charges will be = $(125 - x)$ (because total of their rates was 125)

first mechanic worked for 5 hours, and the second mechanic worked for 15 hours and together they charged a total of $1225

Means

$5 x + 15 (125-x) = 1225$

$5 x + 1875 - 15 x = 1225$

$1875 - 10 x = 1225$

Adding 10 x in both sides

$1875 - 10 x + 10 x = 1225 + 10 x \\1875 = 1225 + 10 x$

Subtracting 1225 from both sides

$1875 - 1225 = 1225 + 10 x - 1225\\650 = 10 x$

Dividing 10 in both sides

$\frac{650}{10} = \frac{10x}{10}$

x = 65

For second mecahnics rate = 125 - 65 = 60

Hence The mechanic who worked 5 hours charged $ 65 per hour, the one who worked 15 hours charged $ 60 per hour: Answer

Hope it will help :)

3 0

3 years ago

Question 1)<br>Solve 8x + 3 = 3x + 18

Dafna1 [17]

Step-by-step explanation:

8x-3x = 18-3(like terms)

or,5x = 15

or,x=15/5

or,x=3

8 0

3 years ago

Read 2 more answers

The radius of a clock face is 8.5 centimeters. What is the circumference of the clock?

Rus_ich [418]

Its circumference will be 53.38cm

7 0

3 years ago

Read 2 more answers