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Andreyy89
3 years ago
14

Washing powder cost 12.87 for 9 kg. hwo much does 1 kg cost to the nearst cent

Mathematics
2 answers:
Goryan [66]3 years ago
5 0

Answer:

hard

Step-by-step explanation:

I don't know because I have never learnt these things

Sav [38]3 years ago
4 0

Answer:

1.43

Step-by-step explanation:

9kg -------> 12.87

1kg ---------> x

let the unknown number be x

9 = 12.87 \\ 1 = x \\ use \:  \: cross \:  \: multipication \\ 9x = 12.87 \\  \frac{9x}{9}  =  \frac{12.87}{9}  \\ x = 1.43

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75.50 is what percent of 78.25?
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75.50/78.25 = x/100

Using this proportion, finding x will find the percentage out of 100 that 75.50 is of 78.25

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3 years ago
Michael ate 6 bananas. This represents
pychu [463]

Answer:

2.4

Step-by-step explanation:

40 percent * 6 =

(40:100)* 6 =

(40* 6):100 =

240:100 = 2.4

Now we have: 40 percent of 6 = 2.4

Question: What is 40 percent of 6?

Percentage solution with steps:

Step 1: Our output value is 6.

Step 2: We represent the unknown value with $x$.

Step 3: From step 1 above,$6=100\%$.

Step 4: Similarly, $x=40\%$.

Step 5: This results in a pair of simple equations:

$6=100\%(1)$.

$x=40\%(2)$.

Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both

equations have the same unit (%); we have

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Step 7: Again, the reciprocal of both sides gives

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