How to create a story for4X minus 3X +4-8 = 30

Lee has $1.75 in dimes and nickels. the number of nickels is 11 more than the number of dimes. how many of each coin does he have?

Gregory draws a scale drawing of his room. the scale that he uses is 1 cm : 4 ft. on his drawing, the room is 3 centimeters long. which equation can be used to find the actual length of gregory's room?

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?