$18 is 30% or 0.3 of 60 dollars
Original painting was 39 ft²
(1.00-.2)39=39(.8)=31.2 ft²
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x + y = 3.36 --> the boys are splitting $3.36
x = 3y - .12 --> one boy received $.12 less than 3 times as much as the other
--> substitute the second equation for the x in the first equation
(3y - .12) + y = 3.36 --> combine like terms
4y - .12 = 3.36 --> add .12 to both sides of the equation
4y = 3.48 --> divide both sides by 4
y = .87
the other boy gets $0.87
substitute into x = 3y - 12
x = 3(.87) - .12
x = 2.61 - .12
x = 2.49
the first boy gets $2.49
Answer:
Step-by-step explanation:
Given
time taken by Carlos to cycle is 
For case (1)
Average speed 
For 
Distance traveled 
Therefore Carlos might not be able to cover 6 miles with average speed of 16 ft/s
(2)
for 0.5 hr
distance traveled
Therefore Carlos might be able to cover more than 6 miles with 
