Answer:910
Step-by-step explanation: it rounds up because if the last number is more than 5 you round up
300 boys 200 girls because 300 is 100 more than 200 and both numbers together is 500
6 x 5 = 30
4 x 4 = 16
30 + 16 = 46
There are 46 DVDs in total.
Answer:

Step-by-step explanation:
1/2+1/3 L.C.M = 6

Answer:
3 hours + 5hours = 8 hours ÷ 2 =
4 hours is your answer.
Step-by-step explanation:
If you have 2 people working and need to know how long it would take them to finish a job. Working together on the same job, you add each of their total hours to do the job alone,, 5 + 3 = 8, then divide the 8 by 2 people
equals 4 hours for 2 people on 1 job.