Brandon has a cup of quarters and dimes with a total value of $3.80. the number of quarters is four less than twice the number of quarters. how many quarters and how many dimes does brandon have?

answer:

dimes = 8 and

quarters = 12

step-by-step explanation:

otal value = 380 cents

let dimes be x

quarters be 2x - 4

100 pennies = $1

1 dime = 10 pennies

1 quarter = 25 pennies

therefore;

$ 3.78 = 378 pennies

10x+25(2x-4)=378

10x + 50 x - 100 = 378

60 x = 378 + 100

60 x = 478

      x = 478/60

        = 7.9667

        ≈ 8

therefore;

dimes = 8 and

quarters = 12

1760 kilometers

step-by-step explanation:

multiply the amount of time the plane took to travel by it's speed

b

step-by-step explanation: