On a weekend trip to Winnipeg (Canada) you see that gasoline sells for 103.6 cents Cnd per liter. What is the cost of gasoline in US dollars per gallon? Should you fill up in Winnipeg or wait until you get back to Pembina? (a border city in the US - gas price is $2.64 USS/gal) Note: 1 dollar Cnd 0.754 dollars US b) If the legal speed limit in Canada is 100 km/hr, what is the limit in miles/hr and m/sec?

a) gas price = 2.96 Dollar US/gal; we could wait until we return to Pembina.

b) v = 100 Km/h = 62.1371 miles/h = 27.777 m/s

Explanation:

a) gas price = 103.6 cents Cnd / L * (L / 0.264172 gal) = 392.17 cents/gal

⇒ gas price = 392.17 cents Cnd/gal * (dollar Cnd/100cents) = 3.9217 dollar Cnd/gal

⇒ gas price = 3.9217 dollar Cnd/gal * (0.754 dollar US/dollar Cnd)

⇒ gas price = 2.96 dollars US/gal

the difference between the price of gas in Winnipeg and Pembina is 0.32 dollars US; we could wait until we return to Pembina to fill the tank.

b) velocity = 100 Km/h

⇒ 100 Km/h * (0.621371 miles/Km) = 62.1371 miles/h

⇒ 100 Km/h * (1000 m/Km) * (h/3600s) = 27.777 m/s