The fee he should earn by going to Mexico would double his income this year.

"But if the rent increases to $38 a foot, he doubles his income."

Since his wife's death he had almost doubled his income.

In the last four years, she said, the corporation has doubled its income.

A hotel that last year grossed $5 million has almost doubled its gross income.

Perhaps that way, he thought, he might even be able to double his income.

Little more than a year ago he had predicted how long it would take him to double his income.

Clare doubled her income overnight, and felt that she was doing a useful job.

Thus, perestroika has allowed some more productive workers to double their income.

Since completing the course last April, she claims to have doubled her income as a music teacher.