Bana ba ga Shelly ba le bararo ba feditse letsatsi lotlhe kwa lefelong la metshameko ya metsi. Mitchel o ile a relela thulelo ya metsi makgetlho a le 30. Anne o relela thulelo eo ka diphesente tse 30 go feta ga Mitchel mme Robert o relela makgetlho a le mane go feta Anne.  Robert o relele thulelo ya metsi makgetlho a le makae? 

Bill starts on the 3rd floor. He rides the elevator up to the floor that's equal to 4 times his starting floor plus 6. What floor is Bill on now?
Anne o relele thulelo eo ka diphesente tse 30 go feta ga Mitchel yo o reletseng makgetlho a le 30, ka jalo ke 0.30 * 30 = <<30*.01*30=9>>9 makgetlho a mannye.
Mitchel o relele makgetlho a le 30 mme Anne o relele makgetlho a le 9 go feta a gagwe mo palong ya 30 - 9 = <<30-9=21>>21 ya makgetlho.
Robert o relele thulelo eo makgetlho a le mane go feta Anne, yo o reletseng makgetlho a le 21 ka jalo Robert o relele thulelo eo makgetlho a 4 * 21 = <<4*21=84>>84.
#### 84 

First multiply Bill's starting floor number by 4: 3 * 4 = <<3*4=12>>12
Then add six to find the ending floor Bill is on: 12 + 6 = <<12+6=18>>18
#### 18