If you double president reagan’s age at the time of his first inauguration(69) and subtract his age at the time he died the result is 45.how old was president reagan when he died?

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?

(60 points) explain this in detail

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?