Question

Nother ratio problem?

Answer 1

Lisa has 36 stickers and John has 24. So as a ratio it is:

`36:24 = 3:2`

So Lisa has 3 stickers to every 2 John has.

Explanation:

L = Lisa's stickers

J = John's stickers

Lisa has 12 more than John:

`L = J +12`

Together they have 60 stickers:

`L+J = 60`

Now you have 2 equations and 2 unknowns so you can solve, substitute the value of L from the first equation into the second equation:

`color(red)(L)+J = 60`

`( J +12)+J = 60`

`2J +12 = 60`

`2J = 48`

`J=24`

Okay, we know how many stickers John has, now insert 24 for J into either of the original equations to solve for L:

`L+color(red)(J) = 60`

`L+24 = 60`

`L=36`