To clarify, let's use abbreviations: J for Justin, E for Eva, and M for Emma. Then, J = E + 7.50 and M = J - 12. Along with that, J + E + M = 63. You can substitute M into the third equation using the second equation and arrive at: J + E + J - 12 = 63. Simplifying gives us: 2J + E = 75. Since J equals E + 7.50, substitute that into the equation to find: 2(E + 7.50) + E = 75. This leads to 2E + 15 + E = 75, simplifying to 3E + 15 = 75, hence 3E = 60 which implies E = 20; therefore, Eva has $20. Justin has $7.50 more than Eva, totaling $27.50. Emma has $12 less than Justin, coming to $15.50. Verify by ensuring their totals sum to 63, which they do.
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16x7 = 112 (16 ounces, 7 hours) 112 ounces equals 7 pints of water
The rule of 72 provides a rough estimate for how long it takes for an investment to double, solely based on the interest rate. Therefore, the initial deposit does not influence this estimate. Each of the three accounts will take an equal time to double.
As long as all accounts are opened on the same day with identical interest rates and compounding periods, they will double simultaneously, whether calculated via the rule of 72 or through precise timing.
We cannot infer that the proportion of wives married less than two years intending to have children is significantly greater than that of those married for five years.
