SOLUTION: the ratio of boys is to girls is 7:9 . if the enrolment is of the school is 786,how many boys are there?
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Question 1034519: the ratio of boys is to girls is 7:9 . if the enrolment is of the school is 786,how many boys are there?
Found 2 solutions by ikleyn, josmiceli:
Answer by ikleyn(52832) (Show Source): You can put this solution on YOUR website!
.
the ratio of boys is to girls is 7:9 . if the enrolment is of the school is 786,how many boys are there?
~~~~~~~~~~~~~~~~~~~~~~~~~
Wrong data.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = number of boys
Let = number of girls
-------------------------
(1)
(2)
--------------------
Multiply both sides of (1) by
(1)
Divide both sides by
(1)
Substitute this result into (2)
(2)
Multiply both sides by
(2)
(2)
(2)
Rounded off, there are 344 boys
and
(1)
(1)
(1)
(1)
-----------------------
check:
(2)
(2)
(2)
and
(1)
(1)
(1)
OK
Since the number of boys and girls do not
come out whole numbers, I suspect the given
data is wrong somehow -either copied wrong
or just wrong as it is given.
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