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donuteatingcat
22.07.2019 •
Mathematics
Thursday is ladies night at the slurp and burp bar and grill. all adult beverages are $ 1.25 for women and $ 2.50 for men. a total of 416 adult beverages were sold last thursday night. if the slurp and burp sold a total of $ 997.50 in adult beverages last thursday night, how many adult beverages were sold to women?
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Ответ:
382 * 2.50 = $955
34*1.25 = $42.50
$955+$42.50 = $997.50
Ответ:
Let x be the number of women
y be the number of men
a total of 416 adult beverages were sold
So x + y = 416 equation 1
all adult are $ 1.25 for women and $ 2.50 for men and sold a total of $ 997.50.
So 1.25x + 2.50y = 997.50 equation 2
Now solve both the equations for number of women that is x
using first equation : x + y = 416
Subtract x on both sides . y = 416 -x
Now replace y in second equation
1.25x + 2.50y = 997.50
1.25x + 2.50(416 -x) = 997.50
1.25x + 1040 - 2.50x = 997.50
-1.25x + 1040 = 997.50 (subtract 1040 on both sides)
-1.25x = -42.5 (divide by -1.25 on both sides)
x= 34
There are 34 adult beverages were sold to women.
Ответ:
The Answer is D.)
Hope that helps.