Question

Michiko usually runs d miles in t minutes, but today she ran an extra 9 miles, which took her an extra 70 minutes. Write the equation for her normal speed: r0= Now, write the equation for her speed today: rT=

Answer 1

Usual distance michiko runs= d miles
Time=t
normal speed= r₀
speed today= r₁

According to the question,
r₀= d/t
r₁= d+9/t+70.