152 hahahahahah u just got served its wrong
If we are looking at this strictly mathematically then there are 30 in the set. if 12 is 2 fifths. divide it by 2 give you 6. Which is 1 fifth. Multiply that by 5. gives you the full set 5 * 6 = 30
30
Let the number of Yellow counters you already have is Y Let the number of non-yellow counters you already have is Z Then the current ratio of Yellow counters to the total counters is Y : Y + Z Let the number of Blue counters you add be B After they have been added, the ratio of Yellow counters to the total counters is Y : Y + Z + B This is 1 : 6 Thus Y = 1 and Y + Z + B = 6 → Z + B = 5 Which means that for the Yellow counters you have you will have five times as many counters made up of whatever non-Yellow counters you originally had plus the Blue counters you added. Thus to find out how many Blue counters to add, take the number of Yellow counters, multiply it by 5 and subtract the number of non yellow counters you originally had. examples: You had 6 Yellow counters Add 6 × 5 - 0 = 30 Blue counters Which gives you 6 Yellow and 30 Blue counters → ratio Yellow : total counters = 6 : 30 + 6 = 6 : 36 = 1 : 6 You had 4 Yellow counters and 6 Red counters Add 4 × 5 - 6 = 14 Blue counters Which gives you 4 Yellow counters, 6 Red counters and 14 Blue counters → ratio Yellow : total counters = 4 : 6 + 14 + 4 = 4 : 24 = 1 : 6 You had 4 Yellow Counters, 2 Blue counters and 3 Red counters Add 4 × 5 - (2 + 3) = 15 Blue counters Which gives you 4 Yellow counters, 3 Red counters and 2 + 15 = 17 Blue counters → ratio Yellow : total counters = 4 : 3 + 17 + 4 = 4 : 24 = 1 : 6
One half of 30 is 15.One half of 30 is 15.One half of 30 is 15.One half of 30 is 15.One half of 30 is 15.One half of 30 is 15.
For A whole day it is £30 but for half a day it is only £15!Cool!
Well, isn't that a lovely little math problem we have here. Half of 30 is simply 15. Just imagine that number sitting in the middle of a beautiful painting, bringing balance and harmony to the whole picture. You're doing great, my friend!
two 1/2 + 1/2 = 1
7
30 minutes.
OK, so you do 7x4 (seven is the main number, and 4 quarters are a whole). The answer to 7x4 is 28. Then in a half there are 2 quarters, so you add 2 to 28 which is 30
half of is 4:30 half past is 5:30
It depends on the problem. For instance, put simply, in a class of thirty children, if half had packed lunches, what percent is that? Half of 30 means that 15 children would be half or 50% of the whole class.