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Jason started with d dollars in his piggy bank. One week late, Jason doubled the amount in his piggy bank. Another week late, Jason was able to add $20 to his piggy bank. At this point, the piggy bank
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Jason started with d dollars in his piggy bank. One week late, Jason doubled the amount in his piggy bank. Another week late, Jason was able to add $20 to his piggy bank. At this point, the piggy bank had $50 in it. What is d?

User Dylan Pierce
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D=15 he started with 15 doubles it to 30 and then added 20
User Alen Smith
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