1. Mr. Allen drove 36 miles in his new car on Wednesday and 21 miles on Friday.  How many miles did he drive in these two days?   2. There are 9 cabs and 50 buses in a parking lot. How many vehicles are there in the parking lot?   3. There are 18 men and 38 women in an aeroplane. How many passengers are there altogether?   4. Michael is a mechanic. He repaired 23 trucks and 29 cars last month. How many vehicles did he repair altogether?   5. Mrs. Hurt used 7 gallons of fuel last week. She used 3 gallons this week. How many gallons of fuel were consumed in the two weeks?