The 10 tons should have 37.9% cement.
Let the 25% mixture be x tons
Then the 68% mixture will be (10 -x) tons.
Using formula for mixtures:
Let p for percentage and w for weight in tons.
p₁w₁ + p₂w₂ = pw
25*x + 68*(10-x) = 37.9*10
25x + 680 - 68x = 379
680 - 43x = 379
680 - 379 = 43x
301 = 43x
43x = 301
x = 301/43
x = 7
Recall that x, was for the 25% mixture, 7 tons.
a) For the 68% mixture, = 10 - x = 10 -7 = 3 tons.
b) For the 25% mixture = x = 7 tons.
Answer:
it looks like d go's in the first one and b go's in the second one
Step-by-step explanation:
Answer:
Points C,D, E and F are coplanar.
<span>probability that the card is a red 8
=
2 out of 52 or 1 out of 26
hope it helps</span>
Answer:
It's 576 if you mean 64 times 9!
Step-by-step explanation:
