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11 Sep 2019, 22:36
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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:
15%
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Question Stats:
86% (01:52) correct
14%
(02:38)
wrong
based on 197
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A Math-club class has a ratio of girls to boys of 1.5 to 4.5. Out of all the boys 16.66% are left-handed, how many left-handed boys are there in the class assuming that there are 24 students all together.
A. 8
B. 6
C. 5
D. 4
E. 3
A. 8
B. 6
C. 5
D. 4
E. 3
11 Sep 2019, 23:50
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24÷(4.5+1.5)=4
4*4.5=18
There are 18 boys.
18*16.66%=3
Option E
Posted from my mobile device
4*4.5=18
There are 18 boys.
18*16.66%=3
Option E
Posted from my mobile device
11 Sep 2019, 23:56
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G+B=24
\(\frac{G}{B}=\frac{1.5}{4.5}=\frac{1}{3}\)
B=3G -->G=6, B=18.
16,66% (\(\frac{100}{6}\) %)of boys are left-handed
--> \(\frac{100}{6}\)%=\(\frac{1}{6}\)
18*\(\frac{1}{6}\)=3 (3 boys are left-handed).
The answer is E.
\(\frac{G}{B}=\frac{1.5}{4.5}=\frac{1}{3}\)
B=3G -->G=6, B=18.
16,66% (\(\frac{100}{6}\) %)of boys are left-handed
--> \(\frac{100}{6}\)%=\(\frac{1}{6}\)
18*\(\frac{1}{6}\)=3 (3 boys are left-handed).
The answer is E.
