Answer:
14
Step-by-step explanation:
If he is solving 2 problems per minute and 8 minutes have passed, he has solved
2*8 = 16 problems
There are 30 problems and he has solved 16
30-16 = 14
There are 14 problems left to solve at the start of the 9th minute
Answer: There are 14 math problems left at the beginning of 9th minute.
Step-by-step explanation:
Since we have given that
Number of math problems he has = 30
Number of problems he solved each minute = 2
We need to find the number of problems left for Chinedu to solve at the beginning of the 9th minute.
That means number of questions he solved in 8 minutes will be deducted from the total number of questions.
Number of questions he solved in 8 minutes is given by
[tex]=8\times 2\\\\=16[/tex]
Number of math problems solve at the beginning of the 9th minute is given by [tex]30-16=14[/tex]
