epdf.pub_cbest-cliffs-test-prep13a9b242c7cb4125e6cca92d00a73d5a41681

Part V: Practice-Review-Analyze-Practice
11. E. Drawing a diagram, as shown below, may be helpful in envisioning the process of fitting
the cartons into the box. Notice that 8 cartons will fit across the box, 3 cartons deep,
and two “stacks” high:
8 × 3 × 2 = 48 cartons
8″
4″
2″
3″
9″
16″
12. D. The largest number that divides evenly into 18, 24, and 30 is 6. You could work from
the answers.
13. A. Set up a ratio:
. x
3 8 =
42
Cross multiplying gives 3x
= 336 .
Divide by 3. x = 11.2 or 11 1 ⁄5
14. A. Plug in –3 for each y:
3y 3 - 4y 2
+ y- 6=
3
2
3^-3h
-4^- 3h
+ (-3)- 6=
3^-27h-4^9h-3- 6=
-81 -36 -3 - 6 = -126
15. B. Algebraically: Let x equal number of roses; then 3x equals number of carnations. So,
^xh^1. 00h+ ^3xh^. 50h=
7.
50
x+ 15 . x=
750 .
25 . x = 750 .
x= 3roses
Working up from the answer choices may be easier. Notice that only answer choice B, 3
roses, gives a total of $7.50, since 3 roses purchased means 9 carnations purchased (triple
the number of roses). Three roses at $1 each plus 9 carnations at $.50 each equals
$ 3 + $ 4. 50 = $ 7.
50. Only choice B will result in $7.50 spent on all the flowers.
16. B. Set up an equation:
3
⁄10 of gross is 150
3
⁄10x = 150
422