Victory for the ACT Student Text 15e

206 • M ATH

Š”‡‡ ˆ”‹‡†• ƒ”‡ ’Žƒ›‹‰ ƒ ‰ƒ‡ ‹ ™Š‹…Š ‡ƒ…Š ’‡”•‘ •‹—Ž–ƒ‡‘—•Ž› †‹•’Žƒ›• ‘‡ ‘ˆ –Š”‡‡ Šƒ† •‹‰•ǣ ƒ…Ž‡…Š‡† ϐ‹•–ǡ ƒ ‘’‡ ’ƒŽǡ ‘” –™‘ ‡š–‡†‡† ϐ‹‰‡”•Ǥ ‘™ ƒ› unique combinations of the signs are possible? F. 3 G. 9 H. 10 J. 12 K. 27 1 of the number of girls in a school equals 5 1 of the total number of students, ™Šƒ– ‹• –Š‡ ”ƒ–‹‘ ‘ˆ ‰‹”Ž• –‘ „‘›• ‹ –Š‡ school? A. :5 3 to point Q and „ƒ… ƒŽ‘‰ –Š‡ •ƒ‡ ”‘—–‡ǡ ƒ –‘–ƒŽ †‹•–ƒ…‡ of 2 miles. If he averaged 4 miles per hour on the trip from P to Q and 5 miles per hour on the return trip, what was his average ™ƒŽ‹‰ •’‡‡† ‹ ‹Ž‡• ’‡” Š‘—” ˆ‘” –Š‡ entire trip? F. 2 9 2 G. 4 H. 4 9 4 J. 4 2 1 K. 5 3 B. :3 2 C. :2 5 D. :1 3 E. :1 5 ‡–‡” ™ƒŽ‡† ˆ”‘ ’‘‹– P

25.  ƒ…‡”–ƒ‹ –”‹’ǡ ƒ ‘–‘”‹•– †”‘˜‡ ͳͲ ‹Ž‡• at 30 miles per hour, 10 miles at 40 miles per hour, and 10 miles at 50 miles per hour. Šƒ– ’‘”–‹‘ ‘ˆ Š‡” –‘–ƒŽ †”‹˜‹‰ –‹‡ ™ƒ• spent driving 50 miles per hour? A. 1 51 13 B. 7 5 C. 12 5 D. 3 1 E. 47 12 26. At Glenridge High School, 20% of the students are seniors. If all of the seniors ƒ––‡†‡† –Š‡ •…Š‘‘Ž ’Žƒ›ǡ ƒ† ͸ͲΨ ‘ˆ ƒŽŽ –Š‡ •–—†‡–• ƒ––‡†‡† –Š‡ ’Žƒ›ǡ ™Šƒ– percentage of the ‘Ǧ•‡‹‘”• attended –Š‡ ’Žƒ›ǫ F. 20% G. 40% H. 50% J. 60% K. 100%  –Š‡ ϐ‹‰—”‡ „‡Ž‘™ǡ m n o p q r + + + + + = ? A. 360 B. 540 C. 720 D. 900 E. Cannot be determined from the given information 27.

Answer the Question Being Asked Items #22–26

22.

The Cambridge Edge Practice reading math questions …ƒ”‡ˆ—ŽŽ› –‘ ƒ‡ •—”‡ ›‘— ƒ”‡ answering the “—‡•–‹‘ „‡‹‰ ƒ•‡†Ǥ

If

23.

24.

Carefully Consider “Cannot Be Determined” Item #27

The Cambridge Edge Ž›…Š‘‘•‡ –Š‡ answer “Cannot Be ‡–‡”‹‡†dz ‹ˆ ›‘— have a mathematical reason to do so. In other words, if ›‘—…Š‘•‡ Dz ƒ‘– Be Determined“ as ›‘—” ƒ•™‡” •‹’Ž› „‡…ƒ—•‡ ›‘— –Š‘—‰Š– the test writers †‹†ǯ– ’”‘˜‹†‡ enough information in the question, then ›‘—ǯ”‡ ’”‘„ƒ„Ž› wrong.