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Rule "40-70 (40–70)"

This is one of many errors that LanguageTool can detect.

Description: 40-70 (40–70)
Message: If specifying a range, consider using an en dash instead of a hyphen.
Category: Punctuation (ID: PUNCTUATION)
Link: https://languagetool.org/insights/post/dashes/#how-to-properly-use-an-en-dash
Incorrect sentences
that this rule can detect:
  • Participants in the study were 40-70 years old.
    Correction suggestion: 40–70
  • Web2, however, was added about 20-30 minutes ago and has since gone from green to grey, and didn't collect any information.
    Correction suggestion: 20–30
  • Gargurgle will also start appearing as a potential Pet Rescue from Pet Gnomes in 3-4 weeks' time.
    Correction suggestion: 3–4
Correct sentences
for comparison:
  • The 747-300 features a longer upper deck than the −200.
  • Before the Khomeini-led revolution, Iran bought four 747-100 aircraft with air-refueling boom conversions to support its fleet of F-4 Phantoms.
  • After many years of requests, the Blissymbolic language was finally approved as an encoded language, with code zbl, into the ISO 639-2 and ISO 639-3 standards.
  • Boeing 727-200 jetliners provided by both American and Alaska Airlines were utilized to provide this interchange service.
ID: HYPHEN_TO_EN [1]
Version: 6.6-SNAPSHOT (2024-12-03 22:33:10 +0100)