Linear system/Snowdrops and mistletoes/Exercise/Solution

Let ${}x$ denote the price of a snowdrop and let ${}y$ denote the price of a mistletoe. Then

${}3x+4y=2{.}50\,$

and

${}5x+2y=2{.}30\,.$

Subtracting from the first row the double of the second row, we get

${}-7x=-2{.}10\,$

and hence

${}x=0{.}30\,.$

Therefore we get

${}y=0{.}40\,$

and so the price of the looked-for bunch equals

${}1\cdot 0{.}3+11\cdot 0{.}4=4{.}70\,.$

To the exercise