Step-by-step explanation:
Let
x
be the kg of coffee of brand A in the mix and
y
be the kg of coffee of brand B in the mix.
The total kg must be
50
.
x
+
y
=
50
The cost per kg of the mix must br
$
7.20
. For this, the total cost of the mix will be
6
x
+
8
y
, so the total cost per kg of the mix will be
6
x
+
8
y
50
.
6
x
+
8
y
50
=
7.20
Now that we have our two equations, we can solve.
6
x
+
8
y
=
7.20
⋅
50
6
x
+
8
y
=
360
From the first equation, we can multiply both sides by
6
to get:
6
x
+
6
y
=
300
Subtracting, we get:
2
y
=
60
y
=
30
Thus, we need
30
kg of brand B in our mix. This means that
50
−
30
=
20
kg will be of brand A.
Answer:
Step-by-step explanation:
1. regroup terms
2. Rewrite 
as 
and 343 as 
3. Since both terms are perfect cubes, factor using the sum of cubes formula, 
, where 
and 
4. Factor 
out of 
5. Regroup
6. Factor again
So basically ...
You convert the rupees in paisas. One rupee is equal to one hundred paisas, so ...
280 × 100 = 28,000
And then we divide,
28,000 ÷ 14 = 2000
The post office sold 2000 stamps!
Hope this helped! :)
1 gal = 400 ft²
2 3/8 gal = ? ft²
to solve, use similar ratios with units gal/ft² and compare
(1)/(400) = (2 3/8)/(x)
*multiply both sides by (x) and divide both sides by (1)/(400), you get:
x = (400)*(2 3/8)/(1) = 400*(2 3/8) = 400*2 + 400*3/8 = 800 + 150 = 950 ft²
<u><em>answer is 950 ft²</em></u>
Answer:
Down below
Step-by-step explanation:
