roshawnandries5471
17.03.2020 •
Mathematics
A student can do an average of 25 math problems an hour. If at a certain time of day, he has done 40 math problems, how many problems will he have done if he continues working for another 2 hours?
__ math problems
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Ответ:
90
Step-by-step explanation:
now: 40
after one hour: 40+25 = 65
after two hours: 65+25 = 90
Ответ:
1774cm
Explanation:
11x14=154
20x9x9=1620
154+1620=1774