This is the way to solve this
Ok so
250 left for student desks
250≥8n
n=number of desks
solve
divide both sides by 8
31.25≥n
round down since we cannot have a decimal desk
31 desks
but, the teacher has 1 desk also so add 1
31+1=32
2 5/16 = 2.31 pounds vs the 2.45 pounds
so the answer is cashews
Divide by r on both sides. t=d/r