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NARA [144]
3 years ago
7

10

Mathematics
1 answer:
asambeis [7]3 years ago
5 0

Answer:

The answer is C hopefully this helps

Step-by-step explanation:

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A grocer has 18kg of black tea worth 3.5per kg. She wants to mix
fenix001 [56]

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

3 0
2 years ago
1. An account is opened with a balance of $2800earning 4.25% simple interest. What will be thebalance in the account in 30 years
JulijaS [17]

Answer:

$6370

Explanation:

The simple interest formula gives us the final amount A given the principal amount P:

A=P(1+rt)

where r is the interest rate and t is the time interval.

Now in our case we have

P = 2800

r = 4.25/100

t = 30 years

therefore, the above formula gives

A=2800(1+\frac{4.25}{100}\cdot30)

which simplifies to give

\boxed{A=\$6370}

Hence, the account balance after 30 years will be $6370.

7 0
1 year ago
13 cans of vegetables and 14 of soup. They put the cans in bags with 3 cans in each bag how many bags of cans did they have .
igomit [66]

Answer:

9

Step-by-step explanation:

13 + 14 = 27

27 / 3 = 9 cans.

4 0
3 years ago
A person invests 10000 dollars in a bank. The bank pays 5.5% interest compounded
Blizzard [7]

Answer:

Step-by-step explanation:

4000 years

8 0
2 years ago
Jacob and Ali want to run from one corner of a football field to the opposite corner. The rectangular football field is 50 yards
svet-max [94.6K]

Answer:

Jacob ran 40 yards more than Ali.

Step-by-step explanation:

Football field is in the shape of a rectangle having dimensions 120 yards × 50 yards

Since Jacob runs around the perimeter of the field from one corner to other corner, therefore, distance run by Jacob = (\text{Length+width})

Distance run by Jacob = 50 + 120 = 170 yards

Ali runs through the middle of the field diagonally on a straight line.

Therefore, distance covered by Ali = \sqrt{\text{length}^{2}+\text{width}^{2}}

= \sqrt{(50)^{2}+(120)^{2}}

= \sqrt{2500+14400}

= \sqrt{16900}

= 130 yards

Now difference between the distance covered by Jacob and Ali

= 170 - 130

= 40 yards

Therefore, Jacob ran 40 yards more than Ali.

7 0
3 years ago
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