The charge for a microwave repair visits was 82.21 including tax if tax was 6.79 then how much was the repair visit

kali will take 5 day to make 12 kilomters

approximately 5 hours 32 minutes

let x be the amount of it takes both pumps to fill and 1 pump to empty

so the pumps fill/empty at the rate of per hour

first pump fills at a rate of per hour

second pump fills at a rate of per hour

third pump empties at a rate of per hour

together the reservoir fills at a rate of

+ - =

multiply each term by 720x

120x + 90x - 80x = 720

130x = 720 ( divide both sides by 130 )

x = = 5. hours

(0. × 60 ≈ 32 minutes )

time taken to fill reservoir is 5 hours 32 minutes

you can use the sas similarity.

a line dividing two triangle sides proportionally creates a new, smaller triangle whose angle is the same as the large triangle. its two sides are proportional to the large triangle. this implies the small and the large triangle are similar. similar triangles have all three angles the same. this implies the dividing line is parallel to the third side of the original triangle. lmk if you have questions.