AccelePrep for the ACT Test 2nd Edition Student Text

C HAPTER 6 | T RY I T O UT ! M ATH P RACTICE • 125

16. If the ratio of apples to oranges in a fruit salad made of only those two fruits is 8 to 7, what fraction of the salad is oranges? F. 56 1 G. 15 1 H. 7 1 J. 15 7 K. 7 8 17. If a b c 2 3 4 , then what is the average (arithmetic mean) of a , b , and c , in terms of a ? A. a 18 13 B. a 3 4 C. a 9 13 D. 2 a E. a 3 8 18. Maggie has to inventory her employer’s collection of books. There are three categories of books. Historical novels account for one-fourth of the books. Classics comprise 6 1 of the remaining books and there are 30 travel books. How many books does she have to inventory? F. 30 G. 36 H. 48 J. 64 K. 96

19.  –Š‡ ϐ‹‰—”‡ „‡Ž‘™ǡ ™Šƒ– ‹• –Š‡ •Ž‘’‡ ‘ˆ Ž‹‡ l ?

A. 1 B. 2 1 C. 0 D. 2 1 E. 1 20. If Yuriko is now twice as old as Lisa was 10 years ago, how old is Lisa today if Yuriko is now n years old? F.

n 2 10 G. n 2 10 H. n 10 J. n 2 10 K. n 2 10