Let p(a) = 0.49, p(b) = 0.24, and p(a | b.= 0.44. a. calculate p(a ∩ b). (round your answer to 3 decimal places.) p(a ∩ b..106 b. calculate p(a u b). (round your answer to 3 decimal places.) p(a u b..290 c. calculate p(b | a). (round your answer to 3 decimal places.) p(b | a..143

it’s the first one your welcome

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.