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If x =3 then y=21 what is the value of x when y=105
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17 votes
If x =3 then y=21 what is the value of x when y=105

User Waseem Sarwar
by
3.2k points

2 Answers

5 votes

Answer: x = 15

Step-by-step explanation: Proportions.

  • 3/21 = x/105 (cross multiply)
  • 105*3 = 21x (simplify)
  • 315 = 21x (divide)
  • 15 = x

User Farhan Tahir
by
3.1k points
11 votes

Answer:

15

Explanation:

21/3=7

x=y/7

so 105/7=x

the answer is 105/7=15

User Axelrotter
by
3.5k points
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