Asked by Bella
The ratio of adults to children at a holiday concert is expected to be 5 to 2. If 490 peole attend, approximately how many will be children? How many will be adults?
Thank you! Last problem and cant figure it out!
Thank you! Last problem and cant figure it out!
Answers
Answered by
Vgpsa
VARIABLES
a = adults
c = children
p = people
GIVENS
a = (5/2)c
p = a + c
PLUG IN p&a, SOLVE FOR C
490 = (7/2)c
490 = (7/2)c
c = 140
SOLVE FOR A
a = 490 - 140 = 350
ANSWER
140 children
350 adults
a = adults
c = children
p = people
GIVENS
a = (5/2)c
p = a + c
PLUG IN p&a, SOLVE FOR C
490 = (7/2)c
490 = (7/2)c
c = 140
SOLVE FOR A
a = 490 - 140 = 350
ANSWER
140 children
350 adults
Answered by
Reiny
let number of adults be 5x
let number of children be 2x
then 5x+2x = 490
7x=490
x=70
so adults = 5x = 350
children = 2x = 140
let number of children be 2x
then 5x+2x = 490
7x=490
x=70
so adults = 5x = 350
children = 2x = 140
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