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Divide 12p between Ann and bob so that bob has twice as much as Ann how much has Ann?
Wiki User
∙ 15y ago
Ann + Bob = 12 which means Ann = 12 - Bob
Bob = 2 * Ann, so Bob = 2 * (12 - Bob)
Bob = 24 - 2*Bob
3 * Bob = 24
Bob has 8
Ann has 12 - 8, which is 4.
Double checking our work, together they have 12, and Bob has twice what Ann has.
Wiki User
∙ 15y ago
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First of all--- is it 12p -/+ 7=139, but I'll do both anyway. 1. 12p-7=139 this means you + 7 to both sides first, to get the variable(p) by itself. so the equation would be 12p=146. Next divide 12 from both sides and it leaves you with p=12.1666 -repeating of course. 2. 12p+7=139 means you subtract 7 from both sides to get 12p by itself again. the equation would then be 12p=132. divide 12 from both sides and you get- p=11(which is one of your answers) :) so the answer is d.11.
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