Answer:6/5<x<.10/3
Step-by-step explanation:
let
x-------> the number of Lucy's orders
y-------> the number of Sam's orders
z-------> the number of Bob's orders
we know that
<u></u>----> equation A
-----> equation B
-----> equation C
substitute equation B and C in equation A
find z
find y
therefore
<u>the answer is</u>
the number of Lucy's orders is
the number of Sam's orders is
the number of Bob's orders is
Answer: x is 20
Step-by-step explanation:
This is ratio
a : c = b : x and d : unknown
a : c = 9 : 12 = 3 : 4 which is 9/12
b : x = 15 : x which is 15 / x
So the proportion will be :
3/4 = 15/x
So Cross multiplying
3x = 90
Divide both side by 3
x = 90/3
x = 20