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mars1129 [50]
3 years ago
13

John has 1/3 as much money as grant. Grant gives John 9$. Now grant has 6$ more than John. How much money do grant and John have

in all
Mathematics
1 answer:
anastassius [24]3 years ago
5 0

Answer:

48 dollars

Step-by-step explanation:

grant originally had 36 and john had 12

decrease grant by 9 and increase john by 9

grant has 27, and john has 21

difference is 6 so the sum is 48.

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3 years ago
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5 0
3 years ago
Anyone know the answer ?
lisov135 [29]

Answer:

n = 7

Step-by-step explanation:

Area \: of \:  \triangle =  \frac{1}{2}  \times base \times height \\  \\ 12 =  \frac{1}{2}  \times (n + 5) \times (n + 5 - 10) \\  \\ 12 \times 2 = (n + 5)(n - 5) \\  \\ 24 =  {n}^{2}  -  {5}^{2}  \\  \\ 24 =  {n}^{2}  - 25 \\  \\ 24 + 25 =  {n}^{2}  \\  \\  {n}^{2}  = 49 \\  \\ n =  \pm \:  \sqrt{49}  \\  \\ n =  \pm \: 7 \\  \\  n =  - 7 \:  \: or \:  \: n =  7 \\

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