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| 1. |
the sum of the ages of a father and his daughter is 85yrs. five years ago, the father was exactly four times as old as his daughter. the present age of the father is? |
| Answer» <html><body><p><strong>Answer:</strong></p><p></p><p><strong>Step-by-step <a href="https://interviewquestions.tuteehub.com/tag/explanation-455162" style="font-weight:bold;" target="_blank" title="Click to know more about EXPLANATION">EXPLANATION</a>:</strong></p><p><a href="https://interviewquestions.tuteehub.com/tag/x-746616" style="font-weight:bold;" target="_blank" title="Click to know more about X">X</a>+y=85</p><p>x-5=4(y-5)</p><p>x-5=4y-<a href="https://interviewquestions.tuteehub.com/tag/20-287209" style="font-weight:bold;" target="_blank" title="Click to know more about 20">20</a></p><p>therefore x=4y-15</p><p>substituting in 1 we get</p><p>5y-15=85</p><p>5y=100</p><p>therefore y=20</p><p>x=85-y</p><p>65</p><p>thus <a href="https://interviewquestions.tuteehub.com/tag/values-25920" style="font-weight:bold;" target="_blank" title="Click to know more about VALUES">VALUES</a> of x and y are 65 and 20 respectively</p><p>x=69</p></body></html> | |