kpw2217p4qm55 kpw2217p4qm55
  • 26-02-2018
  • Mathematics
contestada

Seven-tenths of a number decreased by thirteen is equal to three-tenths the number increased by 13. Find the number.

Respuesta :

iGreen
iGreen iGreen
  • 26-02-2018
Create an equation from the word problem. 'of' indicates multiplication, 'decreased' indicates subtraction, 'increased' indicates addition. Let's use 'x' for the number.

[tex]\sf\dfrac{7}{10}x-13=\dfrac{3}{10}x+13[/tex]

Now solve for 'x'. Subtract 3/10x to both sides:

[tex]\sf\dfrac{4}{10}x-13=13[/tex]

Add 13 to both sides:

[tex]\sf\dfrac{4}{10}x=26[/tex]

Divide 4/10 to both sides or multiply by its reciprocal, 10/4:

[tex]\sf x=\boxed{\sf 65}[/tex]
Answer Link

Otras preguntas

If a person rows to his favorite fishing spot 21 miles downstream in the same amount of time that he rows 7 miles upstream and if the current is 7 mph, find how
Poem on aasha (hope) in hindi please
On a recent trip to the convenience store, you picked up 3 gallons of milk, 6 bottles of water, and 6 snack-size bags of chips. Your total bill (before tax) was
Find the measure of Angle E if Arc AB = 80 degrees and Arc CD = 38. Round to the nearest tenth.
(1 out of 5 parts) please help >3
How can e-waste lead to health and safety issues?
PLEAZE HELP IM STUCK PLS
Gender is not a diversity issue. True False Outsourcing moves a job duty to an outside company. True False
Consider the following excerpt: “businesses are encouraging and promoting healthier lifestyle choices to their employees”. Indicate which macro-environmental fa
Total area= Help me please;! Asap thanks so much