29. when you find a right angled in a circle, it is 1/4. 1/4 of 100 is 25%. to find the percentage of women, 2/5 x100 = 40%. take 100% and minus all the numbers you know and you get the percentage of boys.

30. to find how many more women, find out the percentage difference between men and women. 100% = 360,000 so find the 15%.

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