It looks like you’re asking about the phrase: "A alone can do a piece of work in..." This seems to be the start of a classic work and time problem, often found in math or logic puzzles, where:

• "A alone can do a piece of work in X time."
• "B alone can do the same piece of work in Y time."
• Then, questions usually ask how long A and B together take, or how long they take working alternately, etc.

Example Explanation

If you want to complete the phrase or solve a problem like this, you might say:

• "A alone can do a piece of work in 5 hours."
• "B alone can do the same piece of work in 3 hours."

Then, you can calculate:

• How much work A does in 1 hour: 1/5 of the work.
• How much work B does in 1 hour: 1/3 of the work.
• Together in 1 hour: 1/5 + 1/3 = 8/15 of the work.
• So, together, they take 15/8 hours to complete the work.

If you want, please provide the full problem or numbers, and I can help solve it step-by-step!