David weighs 20 pounds more than katie while jonathan weighs 120 pounds less than three times katie's weight if david and jonothan weigh the same amount how much does katie weigh

Question

Mathematics

Kaylin Pace

2 July, 20:58

David weighs 20 pounds more than katie while jonathan weighs 120 pounds less than three times katie's weight if david and jonothan weigh the same amount how much does katie weigh

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Answers (1)

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Beetle · Answer 1

D = k + 20

j = 3k - 120

d = j

k + 20 = 3k - 120

20 + 120 = 3k - k

140 = 2k

140/2 = k

70 = k ... so Katie weighs 70 lbs

David and Johnathan each weigh 90 lbs