Subscribers to a local newspaper were asked whether they regularly, occasionally or never read the business section and whether they subscribe the print edition or digital edition or both. The data obtained from 500 subscribers is shown below:

Regularly

Occasionally

Never

Total

Print only

40

30

90

160

Digital only

130

60

10

200

Both print and digital

80

40

20

140

Total

250

130

120

500

What percentage of subscribers buy the digital edition onlyorregularly read business section?