Answer key shows 85. Show solution. Another question. What number must be divided by 9/4 to get 20%? Is the answer 0.45? And if it is 20% then why is the answer 0 and not 0.45? Another question. A certain number when raised by 130% gives 754. What is the number? Answer key shows x(130%) = 754, therefore x = 180. Others answered it as x + 130x100 = 754, therefore x = 327.83. Can you explain how you got the answer and why is the other answer is incorrect
in Algebra 1 Answers by

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

1) Model loses 3 pounds every 15 days

So she loses 15/3 or 5 pound every day.

She has to lose 17 pounds more because she already has lost 3 pounds,

So total days required to lose 17 pounds = 17 *5 = 85

2) What number must be divided by 9/4 to get 20%?

Try to write it in equation

x*4/9  = x *0.2

but we know lhs is never equal rhs unless x = 0

3) Edit:

Edit: Your question said to raise x by 130% it doesn't say that 130% of x =754

But if you want 130% of x = 754

then,

130/100 * x = 754

=> x = 754*100/130 = 580
by Level 4 User (9.5k points)
edited by

Related questions

Welcome to MathHomeworkAnswers.org, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!
85,304 questions
90,724 answers
2,173 comments
101,380 users