On friday 2/5 of the students wore blue shirts and 5/12 wore white shirts . what fraction of students wore either a blue shirt or a white shirt

And employee salary increased by $4500 which represents a 15% raise what is the rate of the increase

Two blends of tea are mixed to make a blend that will be sold at the fair. black tea sells for $2.20 per pound and orange pekoe tea sells for $3.00 per pound. how much of each should be used to obtain a 4lb blend selling for $2.50 per pound?

Which ratios are equivalent to 10: 16? check all that apply. 30 to 48 25: 35 8: 32 5 to 15