Question

I need help on these questions please?

Answer 1

a)

x/25 = 7/2 --> x = 25 * 7/2 = 87.5 miles

b)

x = 45/75 = 0.6 = 60%

c)

x = 1/(1/24 + 1/30) = 13 1/3 minutes

d)

x/2 + x/6 = 12 --> x = 18