epdf.pub_cbest-cliffs-test-prep13a9b242c7cb4125e6cca92d00a73d5a41681

Part II: Analysis of Exam Areas
To solve the problem, let x be the number of dishes Mo washes on Tuesday, then
x+ 22is the number of dishes he washes on Monday. So the equation looks like
this:
Tuesday Monday Total
x + (x + 22) = 88
Solving gives you:
2x
+ 22=
88
Subtract 22 from each side:
2x
+ 22=
88
-22
-22
2x =66
Dividing by 2 leaves:
2x
2
=
66
2
x = 33
So the correct answer is B. Is this reasonable? Well, if Mo washes 33 dishes on
Tuesday, and 22 more than 33 on Monday, he washed 55 dishes on Monday. So
the total of Monday and Tuesday is 33 + 55 = 88. Yes, it is reasonable. It checks.
Glance at the Choices
Glance at the choices on procedure problems. Some problems may not ask you to
solve for a numerical answer or even an answer including variables. Rather, you
may be asked to set up the equation or expression without doing any solving. A
quick glance at the answer choices can help you know what is expected.
Samples
46. 51 # 6 could be quickly mentally calculated by
A. 50 # 6 + 1
B. 51 + 51 + 51 + 51 + 51 + 51
C. ( 50 # 6) + ( 1 # 6)
D. ( 50 # 6)
+ 1 ⁄6
E. adding 51 sixes
68
Answer C is correct. The quickest method of calculating 51 # 6 is to first multiply
50# 6(resulting in 300), then multiplying 1# 6(resulting in 6), and adding the
products together ^300 + 6 = 306h. Answer choices B and E give the correct
answer (306) as well, but neither is the best way to quickly calculate the answer.