(1). If A and B can do a work in 45 and 40 days respectively, they began the work together, but A left after some time and B finished the remaining work in 23 days. After how many days did A leaves?

• (a). 12
• (b). 14
• (c). 6
• (d). 9
• (e). None of these

(2). If A and B can do a work in 20 and 15 days respectively, they began the work together, but A left after some time and finished the remaining work in 8 days. After how many days did A leaves?

• (a). 4
• (b). 5
• (c). 7
• (d). 12
• (e). None of these

(3). A can do piece of work in 12 days which B can do in 18 days. They begin together but 3 days before completion of the work, A leaves off. The total number of days to complete the work is.

• (a). 6
• (b). 8
• (c). 13
• (d). 9
• (e). None of these

(4). A is twice as fast as B, and is therefore able to finish a work in 30 days less than B. Find the time in which they can do it working together

• (a). 60
• (b). 14
• (c). 20
• (d). 25
• (e). None of these

(5). A is 4 times as fast as B, and is therefore able to finish a work in 45 days less than B. Find the time in which they can do it working together

• (a). 12
• (b). 21
• (c). 25
• (d). 15
• (e). None of these

(6). A is 3 times as good a workman as B. If together, they finish the work in 3 days, then A alone can do the same work in how many days

• (a). 12
• (b). 4
• (c). 2
• (d). 5
• (e). None of these

(7). A is twice as good a workman as B. If together, they finish the work in 8 days, then B alone can do the same work in how many days

• (a). 24
• (b). 14
• (c). 20
• (d). 12
• (e). None of these

• (a). 1
• (b). 2
• (c). 3
• (d). 4
• (e). None of these

• (a). 1
• (b). 2
• (c). 3
• (d). 4
• (e). None of these

• (a). 1
• (b). 2
• (c). 3
• (d). 4
• (e). None of these