If someone orders 250 pens and 250 pencils. the pens cost 11 cents more than the pencils. the total was $42.50. what is the cost of each pen and pencil?

the cost of each pen is $0.14

the cost of each pencil is $0.03

Step-by-step explanation:

Let x represent the cost of each pen.

Let y represent the cost of each pencil.

If someone orders 250 pens and 250 pencils and the total was $42.50. it means that

250x + 250y = 42.50 - - - - - - - - 1

The pens cost 11 cents more than the pencils. Converting 11 cents to dollars, it becomes 11/100 = $0.11. This means that

x = y + 0.11

Substituting x = y + 0.11 into equation 1, it becomes

250(y + 0.11) + 250y = 42.50

250y + 27.50 + 250y = 42.50

250y + 250y = 42.5 - 27.5

500y = 15

y = 15/500

y = 0.03

x = y + 0.11 = 0.03 + 0.11

x = $0.14

69.64%

step-by-step explanation:

irrational, then, just means all the numbers that aren't rational. every integer is a rational number, since each integer n can be written in the form n/1. however, numbers like 1/2, 45454737/2424242, and -3/7 are also rational, since they are fractions whose numerator and denominator are integers.

step-by-step explanation: