If Amy were 15 cm taller, she would be 5cm taller than Joanne. If Joanne were 30% shorter, she would be 29cm shorter than Amy. Find the sum of the heights of Amy and Joanne

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)

For a 0.25 pfor b o.3pp (0.25+0.3)=0.28