5. Alice and Nelly had $520 altogether. Alice spent 30% of her money while Nelly spent $180. Each of them then had the same amount of money left. How much did Nelly have at first?
A [ ][ ][ ][ ][ ][ ][ ][S][S][S] )
N [ ][ ][ ][ ][ ][ ][ ][$180] ) $520
17 u -- > 520 – 180 = 340
1 u -- > 340 ÷ 17 = 20
7 u -- > 7 x 20 = 140
140 + 180 = $320
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