Question

Ming spent half of her weekly allowance on candy. To earn more money her parents let her weed the garden for $5. What is her weekly allowance if she ended with $12?

Answer 1

$14

Explanation:

Ming is left with $12, after receiving $5. To find out how much she had before weeding the garden, we subtract 5 from 12: `$12-$5=$7`

This amount is, as the question states, half her weekly allowance (because she spent half of it on candy). Thus her weekly allowance must be twice what she had then, $7:
`2*$7=$14`

Therefore her weekly allowance is $14

You can also consider this as an equation:
Let `W=`weekly allowance:
`1/2W+5=12`

Rearranging for W:
`1/2W=12-5=7`
`W=7/(1/2)=7/1*2/1=14`