Three times the larger number of two numbers is equal to four times the smaller. the sum of the numbers is 21. find the numbers

Question

15-03-2017
Mathematics

contestada

Three times the larger number of two numbers is equal to four times the smaller. the sum of the numbers is 21. find the numbers

Respuesta :

Otras preguntas

a drawing of a surboard in a catalog shows it's length as 8 4/9 inches. find the actual length of surfboard if 1/2 inch length on the drawing correspond to 3/8

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

a drawing of a surboard in a catalog shows it's length as 8 4/9 inches. find the actual length of surfboard if 1/2 inch length on the drawing correspond to 3/8

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

a drawing of a surboard in a catalog shows it's length as 8 4/9 inches. find the actual length of surfboard if 1/2 inch length on the drawing correspond to 3/8

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

rarrininger rarrininger · Answer 1 · 2017-03-15T11:07:21+01:00

rarrininger rarrininger

15-03-2017

x=larger number
y=smaller number

3x = 4y
x+y=21

3x=4y
3x÷3= 4y÷3
x = 4/3y

x+y=21
4/3y+y=21
1 4/3y=21
1 4/3y ÷ 1 4/3=21 ÷ 1 4/3
y = 9

x+ y = 21
x + 9 = 21
x + 9 - 9 = 21-9
x = 12

Check
3x =4y
3(12) = 4(9)
36=36

Answer Link