Answer:
The slower plane has a speed of 450 km/h and the faster one has a speed of 900 km/h.
Step-by-step explanation:
Two planes:
The first one's speed is x
The second is y.
One plane is flying at twice the speed of the other.
I will say that y = 2x.
Two airplanes leave an airport at the same time, flying in the same direction
Same direction, so their relative speed is the subtraction of their speeds. 2x - x = x.
Means that after 1 hour, they will be x miles apart.
If after 4 hours they are 1800 km apart, find the speed of each plane
After 1 hour, x km apart. After 4, 1800. So
1 hour - x km apart
4 hours - 1800 km apart
4x = 1800
x = 1800/4
x = 450
2x = 2*450 = 900
The slower plane has a speed of 450 km/h and the faster one has a speed of 900 km/h.
1/4 × 4800 = $1200 (Mariam)
3/5 × 4800 = $2880 (Anna)
4800 - 1200 - 2880 = $720
Sara received 720 dollars
If the discount is 15 percent, he still pays (100-15) or 85%
125.99 * 85%
125.99 * .85 = 107.09 is the price he pays for the rod
107.09 * .03 =3.21 is the sales tax
107.09+3.21=110.30 is the price of the rod with the discount and the tax
Answer:
3 week or 21 days consume Vitamin C = 19.95 grams
Step-by-step explanation:
given data
orange juice Vitamin C = 0.6 grams
strawberries Vitamin C = 0.35 grams
to find out
How many grams of Vitamin C does Seth consume in 3 weeks
solution
we first find total Vitamin C consume in 1 day that is
total Vitamin C consume in 1 day = orange juice Vitamin C + strawberries Vitamin C
total Vitamin C consume in 1 day = 0.6 + 0.35
total Vitamin C consume in 1 day = 0.95 grams
so
in 3 week have 3 × 7 = 21 days
so in 21 days consume Vitamin C = 1 day consume × no of days consume
21 days consume Vitamin C = 0.95 × 21
21 days consume Vitamin C = 19.95 grams
