Abox contains 192 pens, they are red green or blue. a quarter of the pens are red. the ratio of green pens to blue pens = 1: 8. how many blue pens are there?

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)

Answer is a not really sure tho