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23 Mar 2016, 12:19
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
89% (01:06) correct
11%
(01:04)
wrong
based on 145
sessions
History
Date
Time
Result
Not Attempted Yet
22
a3
+ 4b
____
90
If a and b represent positive single digits in the correctly worked computation above, what is the value of a + 2b ?
A. 2
B. 7
C. 9
D. 11
E. 12
a3
+ 4b
____
90
If a and b represent positive single digits in the correctly worked computation above, what is the value of a + 2b ?
A. 2
B. 7
C. 9
D. 11
E. 12
23 Mar 2016, 12:20
Kudos
Bookmarks
Bunuel
22
a3
+ 4b
____
90
If a and b represent positive single digits in the correctly worked computation above, what is the value of a + 2b ?
A. 2
B. 7
C. 9
D. 11
E. 12
a3
+ 4b
____
90
If a and b represent positive single digits in the correctly worked computation above, what is the value of a + 2b ?
A. 2
B. 7
C. 9
D. 11
E. 12
Check other Addition/Subtraction/Multiplication Tables problems from our Special Questions Directory
24 Mar 2016, 06:35
Kudos
Bookmarks
Bunuel
22
a3
+ 4b
____
90
If a and b represent positive single digits in the correctly worked computation above, what is the value of a + 2b ?
A. 2
B. 7
C. 9
D. 11
E. 12
a3
+ 4b
____
90
If a and b represent positive single digits in the correctly worked computation above, what is the value of a + 2b ?
A. 2
B. 7
C. 9
D. 11
E. 12
Adding the digits in unit's place , 2+ 3 + b = 10 (Since a and b are positive single digits )
=> b = 5
Now adding the digits in ten's place , 2+a + 4 + 1= 9 (1 has been carried over from unit's place addition)
=> a= 2
a+2b = 2+2*5
=12
Answer E
