How old is Jack?
I. After 20 years, Jack will be twice as old as he is today.
II. Five years ago, Jack was ¾ times of his present age.
Let Jack’s current age be x years, From I, x + 20 = 2x X = 20 From II, X – 5 = ¾ x 4x – 20 = 3x X = 20 Thus, either of statements alone is sufficient to answer the given question.
A and B alone can complete a work in 20 and 30 days, respectively. 50% of the work is completed by C in 5x days, and the remaining work is completed by ...
Amit is 66(2/3)% more efficient than Vivek who can do the same work in 25% more time than Sameer. If Amit and Sameer together can complete 70% of work ...
Ganga, Yamuna &Saraswati can complete a piece of work in 30, 40 & 60 days respectively. All 3 of them started working together and after 4 days,...
Q can do a work in 15 days and R can do the two-third work done by P and Q together in a day. If R completes the work in 18 days, how many days will it ...
A and B can complete a work together in 25 days. If A alone can complete one-fourth of the work in ‘x’ days and remaining work is completed ...
P alone can finish a piece of work ‘M’ in 6 days while Q takes 3 days to finish it alone. P, Q and R working together can finish the work &l...
X men can complete the piece of work in 38 days and (X + 40) men can complete the same work in 16 days less than that of days taken by X men. Find the v...
‘A’ can do a piece of work in 15 days. ‘B’ can do 80% of the same work in 20 days. If they work together for the entire time and get paid Rs.140...
X men can complete the piece of work in 35 days and (X + 34) men can complete the same work in 14 days less than that of days taken by X men. Find the v...
Three machines P,Q and R were hired by a company for a month. Machine P runs 18 hours for 15 days, machine Q runs 20 hours for 18 days and machine R run...