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Westkost [7]
3 years ago
13

Pls ans 1s a,b,c asap

Mathematics
1 answer:
Kazeer [188]3 years ago
5 0
Part a)
1)
let
x--------> the number of men
y-------> the number of women
z-------> the number of children

we know that
x+y+z=512-----> equation 1
x/y=7/11
x/z=7/14-----> x=z/2-----> equation 2
y/z=11/14----> y=(11/14)z----> equation 3

substitute equation 2 and equation 3 in equation 1
[z/2]+[(11/14)z]+z=512-----> multiply by 14 both sides
7z+11z+14z=7168------> 32z=7168
z=7168/32------> z=224

the answer Part a 1) is 
the number of children is 224

Part 2) find the number of men in the film
we know 
x=z/2-----> equation 2
z=224
so
x=224/2-----> 112

the answer part a 2) is 
112

Part b)
total children=224
total amount=224*($1)*45-----> $10080-----> nearest $100-----> $10100

the answer part b) is
$10100

Part c)
divide 224 by 12
224/12=18.6
so
the smallest possible number of groups is
19
18 groups of 12 children-------> 18*12------> 216
and 1 group of  8 children------> 1*8--------> 8

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