If you buy grapes at 1.60 a half pound how many pounds can you buy at 64 dollars

Firstly we have to check how much we have to pay for one pound.

In $1.60 we can buy half pound grapes,

cost of 1 pound grapes = (1.60). (2) = $3.20

Multiply 1.60 by 2 since they have given the cost of half a pound.

How much will you buy in $64 so to do this we will divide $64 by $3.28

64/3.28 = 19.51 lbs

So in $64 we can buy 19.51 pounds of grapes or 19.5 pounds of grapes after rounding.

We will apply unitary method here:

$1.60 can buy 1/2 pound of grapes

$1 can buy 0.5/1.60=0.3125 pounds of grapes

$64 can buy = 0.3125 * 64 = 20 pounds of grapes