Each batch of cookies requires 7/8cup of flour for every 1/4 cup of sugar how can I find the number of cups of flour to use for 4 cups of sugar

Last saturday, the museum box office sold 281 tickets for a total of $3,954. adults ticket cost $15, and students ticket cost $12. how many of each kind of tickets were sold?

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles.

One positive number is 9 more than twice another. if their product is 95, find the numbers