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Start learning 50% faster. Sign in nowThe sum of n terms of the geometric progression Where? a = first term, r = all ratio Sn=a(rn-1)/n-1 S4= 12(44-1)/ 4-1 = 4 × 255 = 1020
A man does double the work done by a boy in the same time. The number of days that 3 men and 4 boys will take to finish a work which can be done by 10 m...
A team of 16 men works 9 hours a day and completes a task in 40 days. If the goal is to finish the same task in 30 days, with each man working 8 hours ...
Three Typists Axe, Wye and Zed working together 3 hours per day and can type 720 pages in 12 days. In a day Wye types as many pages more than Axe as Zed...
A and B together can finish a job in ‘x’ days, while A alone takes ‘x + 32’ days to complete it. B alone can finish the job in 90 days. If C is ...
A, B, and C can finish work in 5 days, 10 days, and 15 days, respectively, working alone. A and B work on the first day, A and C work on the second day,...
Karan, Arjun and Krunal alone can complete a work in 40, 60 and 48 days respectively. All of them started working together but after 3 days from start K...
A and B can do a piece of work in 30 days and 40 days, respectively. They began the work together but after a certain time, A leaves off and B completed...
‘A’ can complete a work in 15 days and is 50% more efficient than ‘B’. ‘A’ and ‘B’ start working together and ‘A’ leaves after 8 day...
Sudhir is 4.5 times as efficient as Aarav. If they work together, they can complete a piece of work in 9 days. How many days will Aarav take to do the s...
"A" can complete a task in 15 days, while it takes 25 days for "B" to complete the same task. The ratio of the efficiencies of "A" and "C" is 2:1. If a ...
