Answer:
one hour
Step-by-step explanation:
as the amount 120, so for first 30 mins = 120, next 10 mins = 50+120, next 10 mins = 50+170, next 10 mins = 220+50 = 270. So, 30 mins + 10×3 = 1 Hour.
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Answer:
one hour
Step-by-step explanation:
as the amount 120, so for first 30 mins = 120, next 10 mins = 50+120, next 10 mins = 50+170, next 10 mins = 220+50 = 270. So, 30 mins + 10×3 = 1 Hour.