in a assortment of calculators 12 are graphing calculators, 16 are scientific, 7 are business. Find the probability of randomly selecting a business calculator, replacing it, then randomly selecting a graphing calculator.

Question

jim_thompson5910 · Answer

There are 12+16+7 = 35 calculators total


P(business calc then graphing calc) = P(business calc)*P(graphing calc)


P(business calc then graphing calc) = (7/35)*(12/35)


P(business calc then graphing calc) = (7*12)/(35*35)


P(business calc then graphing calc) = (84)/(1225)


P(business calc then graphing calc) = 12/175

anonymous · Answer

?