explain all the rules needed to calculate fractions, (including how to change a fraction into percentage and vice versa) and
equations What are the main rules to know to resolve an equation?
exercice 1 (explain as much as you can how you get the result):
one hundred and six people were stopped in the street and the following information obtained: 62 were born in this country ,
50 were taller than 1.6m and 14 were left-handed.
If 3 people were taller than 1.6m, born n this country and left-handed, how many people were only one of these things?
what percentage of those born in this country were left-handed?
there are 3 people who are left-handed, born in England and taller than 1.6m, 2 people who are left-handed and taller than
1.6m. there are twice as many people who are just eft-handed as are left-handed and born in England. How many people are just
calculate and find x/Y: