The sum of two numbers is 49 and the difference between these two numbers is 9. What are these two numbers?​Shown working out please

Let numbers be x and y

ATQ

x+y=49---(1)x-y=9---(2)

Adding both

Now putting value in eq(2)

At a constant it will take one hour to travel 32 mi.at that speed it will take 1/2 hr to travel the remaining 16 mi.it will take 1+1/2 hr to travel the 48mi @ 32mph.so 1 hr = 60 min& 1/2 hr = 30 min1+1/2 hr = 90 min.there are 60s in each 90 × 60 = 3600 seconds.the real question seriously is he why are they driving so slow? ! lol.