anonymous
  • anonymous
A stamp collector bought 160 stamps for $25.00. The purchase included 5¢ stamps, 15¢ stamps, and 25¢ stamps. The number of 15¢ stamps is three times the number of 5¢ stamps. How many of each type of stamp was purchased?
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
jamiebookeater
  • jamiebookeater
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
I found 25 cents and 15 cents, but i cant seem to find 5 cents
IrishBoy123
  • IrishBoy123
how did you solve this for 25c and 15c?
anonymous
  • anonymous
160-4x = 160 -(4*30) = 40 for 25 cents 160 - 3x = 160 - (3*30) = 90 for 15 cents

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

welshfella
  • welshfella
how did you get 4x?
anonymous
  • anonymous
let 5cents stamps to be x and so for 15cents and 25 cents as y ,z respectively
anonymous
  • anonymous
i addded 3x + x
anonymous
  • anonymous
now 15 cts stamps are thrice the time of 5 cts => y=3x;
anonymous
  • anonymous
now again total no. stamps is 160 hence x + y + z =160 also total amount is 25 $ so 5x+15y+25z=25
anonymous
  • anonymous
solve all three equetions for solutions
anonymous
  • anonymous
okaay
anonymous
  • anonymous
would i plug in 25 for x y and z?
anonymous
  • anonymous
no x for 5 , y for 15 and 25 for z
anonymous
  • anonymous
from 1st eq. y=3x puting in 2nd and 3rd we have x+3x+z=160 => 4x + z = 160 ............1 and 5x + 15*3x + 25 z = 2500 ..........2 (since in doller not in cents) => 50x + 25z =2500 or 2x + z = 100 .........2
anonymous
  • anonymous
wouldnt it be .5 .15 .25?
anonymous
  • anonymous
now from new equation 4x +z =160 and 2x + z =100 2(100-z) + z = 160 200 -2z +z =160 => z=40 put in 2x +z = 100 => x=(100-40 ) / 2 x = 30 and y = 3*30 as 3x y=90 hence solved as 30 stamp for 5 c 40 stamps for 25 c and 90 stamps for 15 c
anonymous
  • anonymous
yes .5 .25 .15 for 25 or 5 25 15 for 2500 both are same
anonymous
  • anonymous
oh okay, thank you :)
anonymous
  • anonymous
it s okay ;)

Looking for something else?

Not the answer you are looking for? Search for more explanations.