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The average speed of one airplane is 200 mph faster than that of an automobile. If the automobile starts at 3 a.m. and the airplane starts from the same place at 11 a.m., they will have traveled the same number of miles by 1:00 p.m. Find the rate of the automobile.
 one year ago
 one year ago
The average speed of one airplane is 200 mph faster than that of an automobile. If the automobile starts at 3 a.m. and the airplane starts from the same place at 11 a.m., they will have traveled the same number of miles by 1:00 p.m. Find the rate of the automobile.
 one year ago
 one year ago

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sauravshakyaBest ResponseYou've already chosen the best response.0
(x+200) * 2 = x*10
 one year ago

gaby236Best ResponseYou've already chosen the best response.1
Time between 11 am and 1 pm is 2 h. During this time the plane has travelled the same distance as the car has travelled in 10 h. If v is the velocity of the car The plane travels 200 * 2 + v*2 The car travels v*10. they travel the same distance 400 + 2v = 10v 400 = 10v  2v 400 = 8v v = 50 mph and speed of plane is a very slow 250 mph.
 one year ago

gaby236Best ResponseYou've already chosen the best response.1
@sauravshakya is correct
 one year ago

gaby236Best ResponseYou've already chosen the best response.1
A druggist has two mixtures of a certain chemical and water, one containing 10% of the chemical and the other containing 40% of the chemical. How much of each mixture should he use to make 10 ounces that contain 25% of the chemical? If x is the amount of 10% mixture used, then which expression represents the ounces of chemical contained in it?
 one year ago

gaby236Best ResponseYou've already chosen the best response.1
x ounces of 10% soln mixed with (10 – x) ounces of 40% soln. as total final volume is 10 ounces amount of chemical in x ounces = 0.1x amount of chemical in (10 – x) ounces = 0.4(10 – x) = 4 – 0.4x amount of chemical in 10 ounces = 10 × 0.25 = 2.5 chemical balance 0.1x + 4 – 0.4x = 2.5 0.3x = 1.5 x = 5 ounces of 10% mixed with (10 – 5) = 5 ounces of 40% to give 10 ounces of 25% daughter takes x hr in 1 hr 1/x work done
 one year ago

gaby236Best ResponseYou've already chosen the best response.1
i need help @sauravshakya
 one year ago

sauravshakyaBest ResponseYou've already chosen the best response.0
PLZ wait a minute
 one year ago

gaby236Best ResponseYou've already chosen the best response.1
a;0.1x b;x c;10x i think my answer is a or c
 one year ago
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