৭২২১
A can complete a work in 20 days, while B can complete the same work in 30 days. If both A and B work together, in how many days will they complete the entire work?
উত্তর
12 days
৭২২২
Hasan can dig 18 holes in 12 minutes. Faruk can dig the same number of holes in only 6 minutes. Hasan digs the first 9 holes, then Faruk digs for 2 minutes, and finally Hasan finishes the remaining holes. How long will it take them to dig 27 holes in total?
উত্তর
16 minutes
৭২২৩
If 6 men can build a wall in 8 days, how many days will 12 men take to build the same wall?
উত্তর
4 days
৭২২৪
A machine produces 240 toys in 4/3 hours. How many toys can it produce in 25 minutes?
উত্তর
75 toys
৭২২৫
A worker earns Tk. 300 on the first day and spends Tk. 150 on the second day, earns Tk. 300 on the third day and again spends Tk. 150 on the fourth day, and so on. On which day would he have had Tk. 1500?
উত্তর
17 th day
৭২২৬
Hasan can paint 54 walls in 27 minutes. Rafiq can paint 25 walls in 10 minutes. Working together, how many walls can they paint in 20 minutes?
উত্তর
90 walls
৭২২৭
Rafi and Shafi can paint a room in 4 days. Shafi can do it alone in 6 days. How many days will Rafi take to paint the room alone?
উত্তর
12 days
৭২২৮
X, Y, and Z are hired to complete a project for Tk. 6900. X and Y together complete 17/25 of the work, and Y and Z together complete 13/25 of the work. What is the wage of Y in Taka?
উত্তর
Tk. 1380
৭২২৯
A ferry can carry 30 trucks or 50 motorcycles at a time. If there are 18 trucks on the ferry, how many motorcycles can be loaded onto it?
উত্তর
20