Let m and r represent the maximum speeds of Malcolm and Ravi in km/h, respectively.
... (m + r)/2 = 260 . . . . . the average of their speeds was 260 kph
... 2m = r + 80 . . . . . . . . double Malcolm's speed is 80 kph more than Ravi's
The second equation can be solved for r and that expression substituted into the first equation.
... 2m - 80 = r . . . . . . . . . . . an expression for r from the second equation
... (m + 2m - 80)/2 = 260 . . . the result of substituting that into the first
... 3m - 80 = 520 . . . . . . . . multiply by 2
... m = 200 . . . . . . . . . . . . . add 80 and divide by 3
... 2·200 - 80 = r = 320 . . .substitute the value of m into the expression for r
Malcolm's maximum speed was 200 km/h.
Ravi's maximum speed was 320 km/h.
Answer:
10/3
Step-by-step explanation:
Multiply 2/3 by 5 because 1/5*5=1 hr
2/3*5=10/3
Answer:
(x/8) = 4
Step-by-step explanation:
The difference between<span> a fixed rate and an adjustable rate </span>mortgage is<span> that,</span>for<span> fixed rates the interest rate </span>is<span> set when you take out the loan and will not change. With an adjustable rate </span>mortgage, the interest rate may go up or down. Some arms <span>also limit how low your interest rate can go.</span>
