Chandler bought 2 pounds of grapes for $3.99 per pound half a pound of apples for $1.75 per pound and 1 1/2 pounds of cherries for $4.90 per pound. How much did chandler spend all together
Chandler spent 2 pounds * $3.99 per pound = $<<2*3.99=7.98>>7.98 on grapes.
He spent 1/2 pounds * $1.75 per pound = $<<1/2*1.75=0.875>>0.875 on apples.
He spent 1 1/2 pounds * $4.90 per pound = $<<1+1/2*4.90=9.35>>9.35 on cherries.
Chandler spent $7.98 + $0.875 + $9.35 = $<<7.98+0.875+9.35=18.205>>18.205 all together. Answer: \boxed{18.21}.