1. Zach loves canoeing.  In one hour he travels 2 miles upstream using his strongest muscles.  However, after working so hard, he has to rest for 30 minutes.  During this time the canoe floats back downstream 1 mile.  Continuing at the same rate of paddling and resting, how long would it take Zach to travel upstream 6 miles?
2.  What is the sum of the first 100 even, nonzero whole numbers?  What is the sum of the first 100 odd whole numbers?
3. Katie had some money.  She gave \$20 to Violet for her birthday and spent one half of the remaining money for clothes.  Then she bought an algebra book for \$15 and used one fifth of what was left for a present for Mac.  She then lost the \$20 that she had left.  How much money did she have to start with?
6.  Suppose that out of a total of 150 athletes, it is found that:  90 take Vitamin A, 88 take Vitamin B, 97 take vitamin C, 53 take both vitamin A and B, 55 take both vitamin A and C, 57 take both vitamin B and C, and 32 take all three vitamins.  How many athletes do not take any vitamins?
4.  In a sack of coins there are pennies, nickels, dimes, and quarters.  There are twice as many quarters as nickels.  There are 8 fewer dimes than quarters.  There are 5 more nickels than pennies.  There are 13 pennies.  How many coins are there in the bag?
5.  Jacob is getting ready for the basketball season.  He decided to go into training for 7 days.  Each day he shot 2 more baskets than he did the day before.  He shot a total of 112 baskets during the seven days.  How many baskets did he make the first day?
Week of
January 10