Bunuel wrote:
Tough and Tricky questions: Arithmetic.
22 a3+
4b___
90
If a and b represent positive single digits in the correctly worked computation above, what is the value of the two digit integer ba?
A. 10
B. 15
C. 25
D. 51
E. 52
Units digits first....
2 + 3 + b yields a sum with units digit 0
So,
b = 5So, the top number and bottom number are now
22 and
45We have:
22a3+
45___
90
22 +
45 = 67
So, we have: 67 +
a3 = 90
Subtract 67 from both sides to get:
a3 = 23
So,
a = 2What is the value of the two digit integer ba?ba =
52Answer: E
Cheers,
Brent
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