Kaitlyn's catering is planning an office reception. the office administrator has requested a candy mixture that is 25% chocolate. kaitlyn has available mixtures that are either 50% chocolate or 10% chocolate. how much of each type should be mixed to get a 20-lb mixture that is 25% chocolate?

Let 'x' represent the amount of 50% mixture used, then '20-x' represents the amount of 10% mixture used

0.25(20) = 0.50x + 0.10(20-x)

solving for 'x' we have x=7.5

20-7.5 = 12.5

7.5 pounds of 50% mixture should be combined with 12.5 pounds of 10% mixture

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)