3 years ago

The cost of 6 sandwiches and 4 drink is $53. The cost of 4 sandwiches and 6 drinks is $47. How much does one sandwich cost?

Mathematics

1 answer:

Dmitry [639]3 years ago

8 0

Answer:

sandwich = 6.50

Step-by-step explanation:

Let s = sandwich price

d = drink price

6s + 4d = 53

4s + 6d = 47

Multiply the first equation by 3

18s + 12d = 159

Multiply the second equation by -2

-4s - 12d = -94

Add these equations together

18s + 12d = 159

-8s - 12d = -94

--------------------------

10s = 65

Divide by 10

s = 65/10

s =6.5

You might be interested in

What is the answer? Reduce 981/387

Sergeu [11.5K]

$\frac{981}{387}\\\\981\to9+8+1=18-is\ divisible\ by\ 9\\\\387\to3+8+7=18-is\ divisible\ by\ 9\\\\\frac{981:9}{387:9}=\frac{109}{43}\\\\109\ and\ 43\ are\ the\ prime\ numbers\\\\Answer:\boxed{\frac{981}{387}=\frac{109}{43}=2\frac{23}{43}}$

7 0

3 years ago

Read 2 more answers

X + t = 3.45 Whats x?

sladkih [1.3K]

We can subtract t from both sides to get...

x+t = 3.45
x+t-t = 3.45-t
x = 3.45-t

6 0

2 years ago

Need help with geometry.

Ann [662]

Answer:

Step-by-step explanation:

3 0

2 years ago

123x78=<br> how much it equals too?

rjkz [21]

Answer: 9,594

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

Please help marking brainlists 5-9c-4c=

Ivanshal [37]

Answer:

the answer would be: 5-13c

7 0

2 years ago