Please solve------

CPT 590 views 5 replies

1).sum of two natural numbers is 8 & the sum of their reciprocal is 8/15 then the numbers are :

a).3 & 5, b).6 & 2 ,c).7 & 1 ,d).4 & 4.

2) julie can type a manuscriptt in 4 hours.pat takes 6 hours to type the same manuscriptt.if julie & pat begin working together at 12 noon,at what time will they complete the typing of the manuscriptt.

a) 2.24pm, b).2.30pm, c).2.40pm, d).3.00pm.

3).probability that a random variable x following poisson distribution would assume a positive value is 1-e^-2.7.what is the mode of the distribution?

a).2, b).3 ,c).4, d).5.

Replies (5)

1) let nos be x & y

eqn 1----- x+y=8

eqn2-----1/x+1/y=8/15

Solving both eqn.. gives answers---3&5(i.e. option a)

please solve another two sums.

1) let nos be x & y eqn 1----- x+y=8 eqn2-----1/x+1/y=8/15 Solving both eqn.. gives answers---3&5(i.e. option a)
For QUESTION 2 WHEN JULIE AND PAT BEGIN AT SAME TIME THEN THEY WILL COMPLETE THE WORK IN 1/1/4+1/6 HRS AFTER SOLVING THIS SUM YOU WILL GET 2.40 hrs. hence they will complete the work at 2.40pm
hence for q.no.2 option c)2.40pm is correct option


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