self Maths Puzzle

At a game of billiards, A can give B 15 points in 60 & A can give C 20 points in 60. How many points can B give C in a game of 90?
a)30 points
b)20 points
c)10 points
d)5 points
e)0 points
f)25 points
g)14 points
h)Data insufficient

Read Solution (Total 4)

c)10 points
14 years agoHelpfull: Yes(6) No(1)

a.30
14 years agoHelpfull: Yes(0) No(4)
0 points. b cannot give any points to c.
14 years agoHelpfull: Yes(0) No(2)
a:b =60: 45
a: c = 60:40
b:c =[b/a]*[a/c] = b/c
=[45/60]*[60/40]=45/40
because of b= 90 numerator will be multiplied by 2 same as per rule dinominator also multiplied by 2
~ 90/80
=b can give c 10 points
6 years agoHelpfull: Yes(0) No(0)

self Other Question

Find the odd man out
1,5,14,30,50,55,91.
a)5
b)50
c)55
d)91
e)1
f)30
g)14
h)none
A man & his wife appear in an interview for 2 vacancies in the same post.The probability of husband's selection is (1/7) & probability of wife's selection is (1/5). what is the probability that only one of them is selected?
a)4/5
b)2/7
c)8/15
d)4/7
e)2/5
f)8/12
g)1/3
h)1/2