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:
can u please provide us with the graph so that we can help u
Step-by-step explanation:
Answer:
11 over 3 is 2 and 2/3. 2 4/5 is 14/5
Step-by-step explanation:
When making a fraction a mixed number, divide the numerator by the denominator. What ever number you have left will be ur numerator,and denominator always stays the same. Making fractions improper: multiply denominator by the whole number (2) and then add the numerator to the answer. denominator stays the same.
Answer:
C) 3
Step-by-step explanation:
I would go with -15 that’s what I came up with
