Question

Luke can buy bottles of water in packages of 6 for $15.24 or in packages of 4 for $11.16. How much money does he save by buying 48 bottles of water at the better price?

Answer 1

`6\ for\ \$15.24\ is\ better\ price\\\\Total\ saving=\$12`

Explanation:

Cost at the rate 6 for $15.24:

Cost of
`6` bottles
`=\$15.24`

Cost of
`1` bottle
`=\$(15.24)/(6)`

Cost of
`48` bottles
`=(15.24)/(6)* 48=15.24* 8=\$121.92`

Cost at the rate 4 for $11.16:

Cost of
`4` bottles
`=\$11.16`

Cost of
`1` bottle
`=(11.16)/(4)`

Cost of
`48` bottles
`=(11.16)/(4)* 48=11.16* 12=\$133.92`

Hence
`6\ bottles\ for\ 15.24` is less expensive.

Total saving
`=133.92-121.92=\$12`