If Sally had $20 less, she would have $80. If Jolly has $20 more, she would have $70. How much money do Sally and Jolly have altogether?
Sally has $80 + $20 = $<<80+20=100>>100.
While Jolly has $70 - $20 = $<<70-20=50>>50.
Thus, Sally and Jolly have $100 + $50 = $<<100+50=150>>150 altogether.
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