Answer:
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Step-by-step explanation:
Answer :
27.5 minutes
Steps:
1) put into fraction form:
160/20 = 220/x
2) simplify:
160/20 = 8/1
3) cross multiply:
8 • x = 8x
220 • 1 = 220
4) divide on both sides:
8/8 = crosses out
220/8 = 27.5
Answer: b is 6
Step-by-step explanation:
Set the proportions up and solve for b
b. 3
---- = ------
10. 5
8=12-8x
-4=8x
-4÷8=8x÷8
-0.5=x