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? Let's be accurate as possible.
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Sally has $80 + $20 = $100. While Jolly has $70 - $20 = $50. Thus, Sally and Jolly have $100 + $50 = $150 altogether.
The answer: 150.
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