Question

1). The $70 selling price of a bicycle is the cost increased by 4 times the cost. Find the cost?

Answer 1

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.