The Fruit Market

Every month, I journey to the fruit market to buy myself some fruits. Today, a vendor is selling some kumquats, limes, pomelos, and blood oranges. Those happen to be my favorite citruses. But I am confused. "Where are the prices?" I ask. The vendor simply shows me four equations on a piece of cardboard. Let $k$ denote kumquats, $l$ denote limes, $p$ denote pomelos, and $b$ denote blood oranges. I want to buy one of each citrus. How much should I pay the vendor?

( $2p$ + $3b$ + $4l$ + $5k$ ) = $\boxed{94}$

( $p$ + $6b$ + $2l$ + $4k$ ) = $\boxed{92}$

( $4p$ + $3b$ + $l$ + $3k$ ) = $\boxed{101}$

( $2p$ + $3b$ + $8l$ + $4k$ ) = $\boxed{100}$