the number of girls in a class is 1/7 times the number of boys. if there are 48 students in the class,find the number of boys and girls separately
Answers
Answered by
25
Solution 1:
Let the number of girls be x
The number of boys = 7x
.
There are 48 students:
x + 7x = 48
.
Solve for x:
8x = 48
x = 6
.
Find the number of boys and girls:
Girls = x = 6
Boys = 7x = 6 x 7 = 42
.
Answer: There are 6 girls and 42 boys.
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Solution 2:
Let the number of boys = x
The number of girls = 1/7 x
.
There are 48 students:
x + 1/7 x = 48
.
Solve x:
x + 1/7 x = 48
8/7 x = 48
8x = 336
x = 42
.
Find the number of boys and girls:
boys = x = 42
girls = 1/7 x =1/7 (42) = 6
.
Answer: There are 6 girls and 42 boys.
TooFree:
girls = 1/7 ... so if girls = x .. then the boys is 7x
thanks
Can you understand that? Or I can try to modify my answer to show the 1/7
please modify your answer
okay .. give me a while ..
hey toofree
Done
Look at solution 2
where
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Answered by
11
let the number of girls in class =x
the number of boys in class=7x
total number of students in class=48
according to the condition,
x+7x=48
8x=48
x=6
the number of girls =x=6
the number of boys,
7x
7×6=42
the number of boys in class=7x
total number of students in class=48
according to the condition,
x+7x=48
8x=48
x=6
the number of girls =x=6
the number of boys,
7x
7×6=42
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