Question

A box of cereal contains 510 grams of cereal to make a bowl of cereal n grams of cereal is removed from the body

Answer 1

The box contain cereals is 510, cereal removed is n. So cereal left in the box is,

$510-n$

The quantity of left cereal in the box is b. So equation is,

$b=510-n$

Thus answer is b = 510 - n.