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I found 25 cents and 15 cents, but i cant seem to find 5 cents

how did you solve this for 25c and 15c?

160-4x = 160 -(4*30) = 40 for 25 cents
160 - 3x = 160 - (3*30) = 90 for 15 cents

how did you get 4x?

let 5cents stamps to be x and so for 15cents and 25 cents as y ,z respectively

i addded 3x + x

now 15 cts stamps are thrice the time of 5 cts
=> y=3x;

now again total no. stamps is 160
hence x + y + z =160
also total amount is 25 $
so 5x+15y+25z=25

solve all three equetions for solutions

okaay

would i plug in 25 for x y and z?

no x for 5 , y for 15 and 25 for z

wouldnt it be .5 .15 .25?

yes .5 .25 .15 for 25
or 5 25 15 for 2500 both are same

oh okay, thank you :)

it s okay ;)