Represent the unknown number with x
9x / 16 = 81
Multiply both sides by 16
9x = 1296
Divide both sides by 9
x = 144
There are seven days in the week, and the 4th of July could be on any of them, so it has a 1/7 chance of being on a Sunday.
Let x be the amount invested at 7% and y the amount invested at 6%
We know that the yearly interest earned = 0.07(x) and 0.06(y)
x+y =4500
0.07x +0.06 y =290
Solving the equations will give , x = $2,000 and y=$2,500
He wants the page to have one of each of the four varieties on it. There are 9 daisies to choose from, 7 roses, 5 dandelions, and 2 pansies, so there are
9*7*5*2 = 630
ways of arranging one of each on the page.
