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

After doing the flame test, what can you infer about the different coloured flames produced by different elements?

The _____ supported the ratification of the Constitution. A. Anti-Federalists B. Federalists C. Proponents D. Loyalists

how did ordinary citizens play a role in spartan oligarchy?

Javier bought a 20 ounce smoothie that contains 450 total calories. How many calories does the smoothie contain per ounce

the regular price of an ipod is $269.99 at walmart. they offer no discount, but charge 5.5% sales tax. what is the final cost of the ipod?

what is 9 2/6 - 6 5/6

what two rivers join at sutters point

what is a watt equivalent to in terms of kilograms, meters and seco

How would you prepare 250 mL of a 6.0M NaNO3 solution from a 15M NaNO3 solution?

The surface area of a triangular pyramid is 305 square inches. The area of the base is 35 square inches. Each face has a base of 9. What is the slant height? DO