Raejack2jenatannaTo Raejack2jenatannaTo

20-01-2017
Mathematics

contestada

Maria is 7 years older than her brother Robert and in 2 years her age will be four times what Robert’s age was three years ago. Find their present ages.

Respuesta :

iLoveDoingWork iLoveDoingWork

20-01-2017

Robert is 7 years old and Maria is 14.

Answer Link

billupass billupass

17-04-2020

Answer:

MARIA=14

ROBERT=7

Step-by-step explanation:

Now

MARIA=X+7

ROBERT=X

In 2 years

MARIA=X+7+2=X+9

ROBERT=X+2

3 years ago

MARIA=X+7-3=X+4

ROBERT=X-3

EQUATION

X+9=4(X-3)

X+9=4x-12

X-X+9=4x-x-12

9=3x-12

3x=21

X=7

ROBERT=7

MARIA=7+7=14

Answer Link

Otras preguntas

Does the green tea have coffein ???

Does the green tea have coffein ???

a store mixes red fescue worth $12 per pound and chewings fescue worth $16 per pound. The mixture is to sell for $15 per pound. Find out how much of each should

The coordinates of the vertices of ANGLE RST are R(-3,5), and S(4,5), and T(4,-2). Find the side lengths to the nearest hundredth and the angle measures to the

The coordinates of the vertices of ANGLE PQR are P(-3,3), Q(2,3), and R(-3,-4). Find the side lengths to the nearest hundredth and the angle measures to the nea

Who knows the book Rose Blanche

The coordinates of the vertices of ANGLE RST are R(-3,5), and S(4,5), and T(4,-2). Find the side lengths to the nearest hundredth and the angle measures to the

How many parrallel lines does a triangle,square,trapezoid,pentagon

Your model locomotive is 16 inches long. It is an exact model of a locomotive that is 40 feet long. A window on the locomotive is how many times wider than a wi

How to make money quickly