Question

Bhavik bought 3 liters of milk and 5 loaves of bread for a total of $11. A month later, he bought 4 liters of milk and 4 loaves of bread at the same prices, for a total of $10.
How much does a liter of milk cost and how much does a loaf of bread cost?

Answer 1

Answer:

the cost of a liter of milk is $\ 0.75$

the cost of a loaf of bread is $\ 1.75$

Step-by-step explanation:

Let

x------> the cost of a liter of milk

y------> the cost of a loaf of bread

we know that

$3x+5y=11$ ------> equation A

$4x+4y=10$ ------> equation B

Multiply equation A by $-4$

$-12x-20y=-44$ -------> equation C

Multiply equation B by $3$

$12x+12y=30$ ------> equation D

Adds equation C and equation D

$-12x-20y=-44\\12x+12y=30\\ ----------\\ -20y+12y=-44+30\\ -8y=-14\\y=\ 1.75$

Find the value of x

substitute the value of y in the equation A

$3x+5(1.75)=11$

$3x=2.25$

$x=\ 0.75$

Answer 2

Answer:

liter of milk : $ 0.75

loaf of bread : $ 1.75

Step-by-step explanation:

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