SOLUTION: Please help me solve these equations 1). The furniture store is having a 15% of sale. If the couch you want regularly costs $530, how much does it cost during the sale? 2). In

Question 957041: Please help me solve these equations
1). The furniture store is having a 15% of sale. If the couch you want regularly costs $530, how much does it cost during the sale?
2). In history class the girl to boy ratio is 3 to 2. If there are a total of 30 students, how many girls are there?
3). Mark can run 3 miles in 18 minutes. If he can maintain his pace, how far will he be able to run in an hour?
4). The Earth's orbit around the Sun is 1,000,000,000 km. How far does the Earth travel each week?
Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
QUESTION 1) 15% off means you pay 85% of the original price. 0.85($530)=$450.50
ANSWER 1: The couch would cost $450.50 during the sale.
QUESTION 2) 3 of 5 are girls so 3/5 are girls: 3/5(30)=18 girls
ANSWER 2: There are 18 girls in the class.
QUESTION 3) (3mi/18min)(60min/1hour)=10mi/hr
ANSWER 3:Mark can run 10 miles in one hour.
QUESTION 4) (1,000,000,000km/yr)(1 year/52weeks)=19,230,769 km/wk
ANSWER: The earth travels 19,230,769 km/wk.
RELATED QUESTIONS
The cake store is having a 50% off sale on all of its cakes. If the cake you want... (answered by ewatrrr)

The cake store is having a 10% off sale on all of its cakes. If the cake you want... (answered by Alan3354,stanbon)

The pie store is having a 20 percent off sale on all of its pies. If the pie you want... (answered by ikleyn,MathTherapy)

A local furniture store is having a terrific sale. They are marking down every price to... (answered by stanbon)

please help. A furniture store marks up items 20%(based on cost). It the furniture... (answered by 303795)

A couch that regularly cost $900 is on sale for $600 what is the percent markdown (answered by rfer)

A furniture store is offering a 35% discount on the price of a discontinued sofa. If the... (answered by rcmcc)

A store is discounting all regularly priced items by 25 percent Find a function f that (answered by rfer)

A couch is on sale for 35% off the original price. If the sale price is $390, find the... (answered by stanbon)