The phrase "and so were able" is correct and usable in written English.
It can be used to indicate that a group of people or individuals were capable of achieving something as a result of a previous action or situation.
Example: "We worked hard on the project, and so were able to meet the deadline ahead of schedule."
Alternatives: "and thus could" or "and therefore managed".
In anticipation of such a situation, they had kept in touch with JPL and Van Allen and so were able to prepare a satellite quickly.
Cllr Jonathan Wills (aged 63½) Bressay, Shetland In the year when 4,500 City people had bonuses over £1m, I'd think they all put £250,000 into their pension schemes, and so were able to reclaim 40% – £100,000 – in tax, total £450m.
Rates did not rise as high in small group plans, for businesses with up to 50 workers, because the companies had an incentive to provide insurance to keep employees happy, and so were able to keep healthier people in the plans, said Peter Newell, an analyst for the United Hospital Fund, a New York-based health care research organization.
For technical reasons, only four out of six specimens were inserted with fiducial markers and so were able to be registered with PET.
As lay persons, peer educators understood the potential disempowerment felt when seeking medicines information from health professionals and so were able to provide unique learning experiences that encouraged others to be 'active partners' in their own medicines management.
The OAD cows had more time at pasture than the TAD cows and so were able to spend more time grazing than the TAD cows, and had less disturbance to their natural grazing pattern.
"Tsipras seems to know this, and so is able to trust in this European reflex".
By then she was living in my flat and so was able to draw me in.
Watson had an advantage, in that he was able to push the signal button much faster, and so was able to respond to almost every answer.
He spoke Arabic, and so was able to hear dialogue and pick up nuances that were beyond the ken of most Western reporters.
The laser's path is ultimately several miles long and so is able to precisely measure concentrations of methane in the range of parts per billion.
