Answer:
20 PERCENT
Explanation:
BECUASE 40 INTO 60 AND THAT MEAN WE PLUS 20
It would go up by 50%
Step-by-step explanation:divide 60 by 40 to get 1.5
then change that to 50% because the extra 1 is the 60 and then change the 0.5 to 50%
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