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1). The $70 selling price of a bicycle is the cost increased by 4 times the cost. Find the cost?
2). Three pounds less than twice mikes weight is 215 pounds. What is his weight?
3). If mr Washingtons saving were increased by 5 times his savings. He would then save $36,000. How much has he saved ?

PLEASE SHOW YOUR WORK !!!!

Respuesta :

1 ) The $70 selling price is the cost increased by 4 times:
Cost - x
4 x = 70
x = 70 : 4
x = 17.5
Answer: The cost is $17.5.
2 ) Mike`s weight - x
2 x - 3 = 215
2 x = 215 + 3
2 x = 218
x = 218 : 2
x = 109
Answer: Mike`s weight is 109 pounds.
3 ) Mr- Washington`s savings - x
5 x = 36,000
x = 36,000 : 5
x = 7,200
Answer: He has saved $7,200.