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3 years ago

Fifteen years from now Ravi's age will be four times his present age.What is Ravi's present age ? Frame the equation and solve.

Mathematics

1 answer:

Archy [21]3 years ago

7 0

Answer:

Ravi's age after 15 years = x+15

Ravi's age = 4 times his present age = 4x

According to question -

15 + x = 4x

=> 15 = 4x-x = 3x

=> 15 = 3x

=> x = 15/3

=> x = 5

Thus , Ravi's present age is 5 years.

Step-by-step explanation:

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Answer:

hay 10 billetes de 2000

hay 4 billetes de 5000

Step-by-step explanation:

Planteamos las siguientes ecuaciones...:

x= billetes de 2000

y= billetes de 5000

ecuaciones :

1) x+y = 14

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despejamos primera ecuacion y remplazamos en segunda :

1) x= 14-y

2) 2000(14-y) + 5000y = 40000

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y= 4

reemplazamos este valor en primera ecuacion:

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x+ 4= 14

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ahora reemplazamo valor de X y valor de Y

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hay 10 billetes de 2000

hay 4 billetes de 5000

Espero que esto te ayude

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