household skills.Half don’t know how to use a washing machine and can’t iron a shirt, a new survey reveals.Less than half can wire a plug, falling to one in five for 16-24 year-olds, while just two in five younger folk can change a lightbulb.Seven in 10 of all ages don’t know how to change a tyre but six in 10 know how to create a social media account and set up a smart phone.The survey, from financial giant Aviva found the gulf between tech tasks and practical chores is widening, especially for