Answer:
28
Step-by-step explanation:
There were 7 chairs in each row, now they add three more to each row so now there's 10 chairs per row. There were 56 chairs altogether previously but now they need 5 times more so 56 times 5 equals 280. so with ten chairs per row and 280 chairs in total: 280/10 = 28. You'll need 28 rows
Answer: 31
How: If there are two negative signs like this, you would connect them together and make it into a addition sign where you then can add them.
Answer:
10:40 = 10/40 = 1/4 of the boats are destroyers
Step-by-step explanation:
I hope this helps! Have a nice day!
Answer:
400
Step-by-step explanation:
25% of 400 is 100
Answer:
30.28
Step-by-step explanation:
6.25 percent of 28.50 is 1.7815 1.78 rounded
28.50+1.78=30.28
