You mix 1/4 cup of juice concentrate for every 2 cups of water to make 18 cups of juice. how much juice concentrate and water do you use?

Solve with work both bert and ernie received an increase in their weekly salaries. bert's salary increased from $520 to $520. ernie's salary went from $580 to $645. find the percent of increase for each salary. what was the larger of the two percents ?

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?