Ex. 4. A and B are playing for money ; A begins with $p and B with q dimes : after B has won $x, how many dimes has each ?
What B has won A has lost, A has 10 (p — x) dimes, B has q + 10x dimes.
EXAMPLES VIII. a.
1 . What must be added to x to make y ? 2. By what must 3 be multiplied to make a ? 3. What dividend gives b as the quotient when 5 is the divisor ? 4. What is the defect of 2 c from 3 d. 6. By how much does 3k exceed k ? 6. If 100 be divided into two parts, and one part be x, what is the other ? 7. What number is less than 20 by c ? 8. What is the price in cents of a oranges at ten cents a dozen ? 9. If the difference of two numbers be 11, and if the smaller be x, what is the greater ? 10. If the sum of two numbers be c, and one of them is 20, what is the other ? 11. What is the excess of 90 over x ? 12. By how much does x exceed 30 ? 13. If 100 contains x 5 times, what is the value of x . 14. What is the cost in dollars of 40 books at x dimes each ? 15. In x years a man will be 36 years old, what is his present age ? 16. How old will a man be in a years if his present age is x years ? 17. If x men take 5 days to reap a field, how long will one man take? 18. What value of x will make 5 x equal to 20 ? 19. What is the price in dimes of 120 apples, when the cost of two dozen is x cents ? 20. How many hours will it take to walk x miles at 4 miles an hour ? 21. How far can I walk in x hours at the rate of y miles an hour ? 22. How many miles is it between two places, if a train travelling p miles an hour takes 5 hours to perform the journey ?
