Question

Un kg de banane costa cat doua kilograme de portocale . Un restaurant a cumparat 30 de kg de portocale si 45 de kg de banane , pentru care a platit 360 de lei . Determinati pretul unui kg de portocale.
am nevoie urgent de raspuns .

Answer 1

Answer:

One kilogram of oranges cost $3.

Step-by-step explanation:

The problem states

• 1 kilogram of bananas costs as much as 2 kilograms of oranges. ($1 \ kg \ bananas = 2 \ kg \ oranges$)
• 30 kilograms of oranges plues 45 kilograms of bananas cost $360.

Let's call $x$ one kilogram bananas and $y$ one kilogram oranges. The cost is related by

$x=2y$

Also, we know by given

$45x+30y=360$

Replacing the first equation into the second one, we have

$45(2y)+30y=360\\90y+30y=360\\120y=360\\y=\frac{360}{120}\\ y=3$

Then, we find the other value

$x=2(3)=6$

Therefore, one kilogram of oranges cost $3.