self Maths Puzzle

A takes thrice as much time as B or twice as much time as C. If working together they can finish a work in 4 days , then c alone can do the work in

Read Solution (Total 1)

let A takes x days then
B=x/3 and C=x/2
1/x+1/(x/3)+1/(x/2)=1/4
solving x=24
therefore C will take 24/2=12
11 years agoHelpfull: Yes(1) No(0)

self Other Question

In a regular polygon, the number of diagonals is 'k' times the number of sides. If the interior angle of the polygon is, then the value of k is

a) (3i-i)/2(i-i)
b) 2(3i-i)/(i-i)
c) 2(i-i)/(3i-i)
d) (i-i)/2(3i-i)
where i = pie = 180 degree. in a room containing 28 people,there are 18 people who speak English,15 people who speak hindi and 22 people who speak kannada.9 person speak both hindi and english, 11 people speak both hindi and kannada ,13 people speak both kannad and english ,how many people speak all the three languages?

Try to solve only venn diagram only(if possible).