felix is a car mechanic. he can fix 2 motorcycles and 3 cars in 170 minutes. he can fix 1 motorcycle and 5 cars in 225 minutes.

Question

2 years ago

8

write a systems of equations to represent the number of minutes to fix a motor cycle, x, and the number of minutes to fix a car, y.

1 answer:

vekshin1 · Answer 1 · 2022-09-25T12:46:27+03:00

vekshin12 years ago

4 0

Answer:

2x+3y=170.......1

1x+5y=225.......2

multiplying equation 2 by 2 and subtracting eq.1 &2

2x+3y-2x-10x=170-225

-7x=-55

x=55/7

55/7+5y=225

5y=225-55/7

y=1520/(7×5)=304/7