The question is incomplete, the complete question is;
A grocer has 18 kg of black tea worth $3.5 per kg. She wants to mix it with green tea worth $2.6 per kg to sell the mixture at $2.9 per kg. How much of green tea should she use?
Answer:
36
Step-by-step explanation:
Let the weight of the green tea used be x kg.
From the question:
We have:
18 kg of black tea at $ 3.5 per kg. Thus total cost of black tea is 18 x 3.5 = $ 63
Cost of green tea is $2.6 per kg. Total cost of green tea is 2.6 * x = $2.6x
Total weight of the mixture is 18 + x kg.
Total cost of the mixture is = $2.9 (18 + x)
Thus,
Total cost of black tea + total cost of green tea = Total cost of the mixture
$63 + $2.6 x = $2.9 (18 + x)
$63 + $2.6x = $52.2 + $2.9x
63 – 52.2 = 0.3 x
10.8 = 0.3 x
x = 10.8/0.3
x = 36
36 kg of green tea is needed
Answer:
the temperature rose by 34*F
Step-by-step explanation:
-13*F + 34 = 21*F
Answer:
0.15
Step-by-step explanation:
For independent events:
P(A and B) = P(A) × P(B)
P(A and B) = 0.50 × 0.30
P(A and B) = 0.15
Answer: 8,800,000
Step-by-step explanation:
First year recorded number of cars on the roads = 80, 000,000
Increase rate = 10%
In the second year , the number of cars recorded = 10% of 80,000,000
= 10/100 x 80,000,000
= 8,000,000
= 80,000,000 + 8,000,000
= 88,000,000
In the third year, the number of cars recorded = 10% of 88,000,000
= 10/100 x 88,000,000
= 8,800,000
= 88,000,000 + 8,800,000
= 96,800,000.
The number of cars we had more in the third years compared to year two will be
= 96,800,000 - 88,000,000
= 8,800,000
Answer:
Step-by-step explanation:
See the solution process below:
Explanation:
The slope-intercept form of a linear equation is: y =mx+b
Where m is the slope and b
is the y-intercept value.
We are given the slope in the problem so we can substitute
−5/6 for m in the formula.
And,
(0,6)
is the y-intercept so we can substitute
6
for
b
in the formula giving:
y
=
−
5
6
x
+
6