Answer:
150
Explanation:
because 155+15=170-20=
the answer 150
and he will earn enough money in 3week
3 weeks
money required=$200
money owned=$155
Money saved per week=$15
Time taken to earn remaining money=x
200-155=45=>money that needs to be saved
time it will take to get that money=45 divided by 15=3
=>3 weeks
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