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You Think You Maths? Come In And Solve This (photo) by jonaji(m): 5:45pm On Jul 30, 2014 |
A hammer and a nail cost $1.10, and the hammer costs one dollar more than the nail. How much does the nail cost?
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Re: You Think You Maths? Come In And Solve This (photo) by kingkaspa: 5:53pm On Jul 30, 2014 |
Hammer costs $1.05 and nail cost $0.05 1 Like |
Re: You Think You Maths? Come In And Solve This (photo) by alabiyemmy(m): 5:53pm On Jul 30, 2014 |
hammer = h nail = n h + n = 1.10 (hammer + nail cost 1.10) h = n + 1 (hammer cost 1 more than nail) putting 2nd equation into first, h + n = 1.10 becomes n + 1 + n = 1.10 this means 2n + 1 = 1.10 so 2n = 0.10 so n = 0.05 (nail costs 0.05) as h = n + 1 h = 0.05 + 1 so h = 1.05 so the hammer costs 1.05 and the nail cost 0.05 then check this works with original problem hammer + nail = 1.10 .... yes hammer costs 1 more than nail ... yes problem solved! |
Re: You Think You Maths? Come In And Solve This (photo) by jonaji(m): 6:11pm On Jul 30, 2014 |
alabiyemmy: hammer = hYou nailed it !!! Congratulations !!! |
Re: You Think You Maths? Come In And Solve This (photo) by amhackdee(m): 6:57pm On Jul 30, 2014 |
Its too simple. |
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