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

Help fast please Nosotros queremos que nuestros padres_______de fumar porque es malísimo para la salud. dejan dejaron degan dejen

please help with angle addition

What is the value of z in the triangle ? Enter your answer in the box . Round your final answer to the nearest hundredth.

X=1-2y how would you solve this?

the length of a rectagle is 5 in longer than its width. if the perimeter of the rectangle is 58 in, find its length and width

Find the perimeter. Write your answer as a fraction or as a whole or mixed number. 3 mm 4 M 3 mm |* mm 3 mm Last one for today thank youu

The difference of x and 7 is at most -28. Translate the sentence into an inequality

Try again. Your carrying capacity line should be a horizontal flat line because it represents a single number. It should intersect the y-axis at the highest pop

Justin runs 7 miles in 60 minutes. At the same rate, how many miles would he run in 24 minutes? miles

If we have 100ml of water at 0 degrees Celsius and it all freezes, how much energy did the water lose? Using the formula Hfus = Q/n