nboohercma nboohercma
  • 03-04-2018
  • Mathematics
contestada

The sum of twice a first number and 4 times the second number is 20. The first number is 3 times the second. Find the numbers

The sum of twice a first number and 4 times the second number is 20 The first number is 3 times the second Find the numbers class=

Respuesta :

jushmk
jushmk jushmk
  • 10-04-2018
Let the first and second numbers be x and y respectively.

Then,
2x+4y = 20
x=3y

Substituting for x,

2(3y)+4y=20 => 6y+4y =20 =>10y=20 =>y =20/10 = 2
And therefore, x=3y = 3*2 = 6

Therefore,
First number = 6 and second number =2
Answer Link

Otras preguntas

A coat that originally sold for $369.00 is on sale at a 40% discount? How much will you pay for the coat?
Show your work please john wants to know the square footage of his living room in order to lay new hardwood floors. The living room has vertices at the coordina
how many miles does the Mediterranean sea stretch from east to west
solve each system using substitution x=-2y=1 x=y-5
Patriotism can best be defined as __________. A. respecting authority B. love for one’s country C. hatred for another nation D. staying informed on national iss
what fraction of two pounds is fifty pence?
What is a sentence with the word Evasively?
how does the slope of a road affects a persons driving
what is the name of the huge city at southeastern corner of new york
an equation stating that two ratios and rates are equivalent is a(n)