Question

On Tuesday, a local hamburger shop sold a combined total of 388 hamburgers and cheeseburgers. The number of cheeseburgers sold was three times the number of hamburgers sold. How many hamburgers were sold on Tuesday?

Answer 1

h + c = 388
c = 3h

now sub in 3h for c in the first equation

Answer 2

4h=388
h=97

Answer 3

yes..97 hamburgers.

Answer 4

can you help me with another one?

Answer 5

I will try

Answer 6

A washer and a dryer cost $740 combined. The washer costs $90 more than the dryer. What is the cost of the dryer?

Answer 7

w + d = 740
w = d + 90

sub d + 90 in for w in the 1st equation

Answer 8

2d+90=740
2d=650
d=325

Answer 9

you got it....dryer is 325

Answer 10

okay I have one more question
Alvin's age is three times Elga's age. The sum of their ages is 112 . What is Elga's age?

Answer 11

a = 3e
a + e = 112

sub in 3e for a in the 2nd equation

Answer 12

4e=112
e=28

Answer 13

correct :)

Answer 14

thank you so much again!

Answer 15

glad to help :)