Have a look at the attached image.
Car A Car B
d=rt d = rt
d = ra * 2.4 d = rb 4
ra = rb+22
distances are the same so set the equations equal
ra * 2.4 =rb *4
substitue in for ra
(rb+22) 2.4 =rb *4
distribute
2.4 rb +52.8 = 4 rb
subtract 2.4 rb from each side
52.8 = 1.6 rb
33 = rb
Car b travels at 33 miles per hour
Car a = 33+22
Car a = 55 miles per hour
60 divided by 4 is 15 15 multiplied by 3 is 45 pages
The formula to find AB is a^2+b^2=c^2, where a is the left side, b is the bottom, and c is x. 2^2 is 4, so it asks for the sq. rt. of 8, which is 2.83 (rounded to the nearest hundredth).
Answer:
$500
Step-by-step explanation:
You hand him 100%
He pays back 140%(original amount plus 40%)= 700
Original amount =x
700/140 = x/100
140x=700*100
140x = 70,000
x=500
200 is the 40% of 500
500+200= 700
