foddlyneedhelp foddlyneedhelp
  • 01-06-2018
  • Mathematics
contestada

Alex and Benny had 440 cards. Alex and Cruz had 320 cards. Benny had 3 times as many cards as Cruz. How many cards did Alex have?

Respuesta :

ashleyspandya ashleyspandya
  • 10-06-2018
260 cards. 

Process: 
A = Alex
B = Benny
C = Cruz

a+b=440
a+c=320

a=440-b
a=320-c

a=440-b=320-c

b=3c

a=440-(3c)=320-c
-3c+440 = -c+320
-3c=-c-120
-2c=-120
c=60

a=320-c
a=320-60

a=260
Answer Link

Otras preguntas

What is 0.05 percent of 6.5?
What were some events/things that caused the Great Depression?
What is the slope of any line parallel to the line 8x + 9y = 3 in the standard (x,y) coordinate plane?
The significance of the Open Door Policy for the United States lay in its (A) providing a use for the Philippines as a way station between China and the United
least number that has 2, 3, 4, as factors
The significance of the Open Door Policy for the United States lay in its (A) providing a use for the Philippines as a way station between China and the United
Suppose you ride your bicycle to the library traveling at 0.5 km/min. It takes you 25 minutes to get to 1.3 the library. How far did you travel?
USE A NUMBER LINE TO FIND 8/9 / 8/45.
Can someone please help me ?
Can someone please help me ?