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sattari [20]
3 years ago
10

Kevin is 3 years older than Daniel. Two years ago, Kevin was 4 times as old as Daniel

Mathematics
2 answers:
alekssr [168]3 years ago
8 0

Answer:

<em>Present age of Kevin = 6 years</em>

Step-by-step explanation:

Let the present age of Daniel  be 'x' years

So, present age of Kevin = (3 + x) years

Two years ago,

Kevin's age was = [(3 + x) - 2] years

& Danial's age was =  (x - 2) years

Its given that two years ago, Kevin was 4 times as old as Daniel

So,

=> (3 + x) - 2 = 4(x - 2)

=> 3 + x - 2 = 4x - 8

=> 1 + x = 4x - 8

=> 3x = 9

=> x = 3

Therefore, present age of Daniel = 3 years

& Present age of Kevin = 3 + 3 = 6 years

gogolik [260]3 years ago
6 0

Answer:

kevin is 6 years old

Step-by-step explanation:

Let Kevin's age now be a

Daniel's age now be b

Kevin is 3 years older than Daniel. -> a-3 = b

Two years ago, Kevin was 4 times as old as Daniel -> a-2 = 4(b-2) = 4b -8

-> a-3 -(a-2) = b - (4b-8)

-> - 1 = -3 b +8

-> -9 = -3b

-> b = 3

-> a = 6

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stellarik [79]

Answer:

D

Step-by-step explanation:

The fruit punch has 2.4 gallons but x %

Apple juice has 5.6 gallons but 100 % or 1

The total mixture would then have 8 gallons and 82 %.

2.4+5.6=8

8×0.82 = 6.56

Then you would do 2.4x + 5.6(1) = 6.56

2.4x + 5.6 = 6.56

2.4x = 0.96

0.96/2.4 = 0.4 = 40%

Therefore, Brand A has 40% fruit juice

5 0
3 years ago
How do I solve this part a,b
Svetach [21]

Answer:

the anwser you put is correct

Step-by-step explanation:

congragulations! glad i could help :)

4 0
3 years ago
Find three positive consecutive integers such that the product of the smallest and the largest is 17 more than three times the m
trapecia [35]
There are two answers to this question
the first possible answer is 5, 6, and 7 and the second possible answer is -4, -3, and -2


Step-by-step explanation:

let the three numbers be (x-1), x, and (x+1)
the product of the smallest and largest number is 17 more than 3 times the middle number, or
(x-1)(x+1) = 3x+17, or
x^2-1 = 3+17, or
x^2-3x-18 = 0
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Then just subtract one and add one to get the other integers. the three numbers are 5, 6, and 7 or -4, -3, and -2
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3 years ago
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maria [59]

There is no equation, nor ordered pair, so it is impossible to answer this question. I apologise.

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3 years ago
Dr. Jekyll has 180 mL of solution that is 20% acid. How many mL of
Ne4ueva [31]

Answer: 54 mL

Step-by-step explanation: First, you need to find how many milliliters 10% is. To do this, divide 180 by 10, which equals 18. Then, since it needs to be thirty percent, times 18 by 3, which equals 54 mL. Hope this helps.

5 0
1 year ago
Read 2 more answers
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