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const companies = {
  {name: "Company One", category: "Finance", start: 1981, end: 2003},
  {name: "Company One", category: "Finance", start: 1992, end: 2008},
  {name: "Company One", category: "Finance", start: 1999, end: 2007},
  {name: "Company One", category: "Finance", start: 1989, end: 2010},
  {name: "Company One", category: "Finance", start: 2009, end: 2014},
  {name: "Company One", category: "Finance", start: 1987, end: 2010},
  {name: "Company One", category: "Finance", start: 1986, end: 1996},
  {name: "Company One", category: "Finance", start: 2011, end: 2016},
  {name: "Company One", category: "Finance", start: 1981, end: 1989}
}
 
const ages = [33, 12, 20, 16, 5, 54, 21, 44, 61, 13, 15, 45, 25, 64, 32];

// Filter retail companies

const retailCompanies = comapanies.filter(function(company) {
  if(company.catgory === 'Retail') {
    return true;
  }
})

const retailComanies = companies.filter(company => company.category === 'Retail');

// get 80's companies

const eightiesCompanies = companies.filter(company => (company.start >= 1908 && company.start < 1990));

console.log(eightiesCompanies);

// Get companies that lasted 10 years or more

const lastedTenYears = companies.filter(company => (company.end - company.start > 10));

console.log(lastedTenYears);