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The word ‘persistently’ means ‘ happening repeatedly or for a long time, or difficult to get rid of.’ Lean and mean- using only what is necessary, and determined to work effectively in order to compete successfully. Vested interests- a strong personal interest in something because you could get an advantage from it. Retrogression- the act of returning to an older and worse state. These telemarketers have been calling me persistently , even though I said I was not interested in their product.
A and B together can complete a piece of work in 10 days. A alone can complete the work in 15 days. How many days will B take to complete the work alone?
A isfive times as efficient as B and can finish a piece of work in 36 days less than B. B can finish this work in how many days?