1. We know that 1 feet = 12 inches
let x be a number of inches, which when added to 18 inches will give 7 feet
18 inches + x inches = 7 feet
18 inches + x inches = 84 inches [1 feet = 12 inches]
x inches = 84 inches - 18 inches
x inches = 66 inches
2. We know that 1 mile = 1760 yards
let x be the number of yards, when added to 2000 yards will be equal to 2 miles
2000 yards + x yards = 2 miles
2000 yards + x yards = 3520 yards
x yards = 1520 yards
3. We know that 1 feet = 12 inches
Number of feet = Given number of inches / 12
Number of feet = 108 / 12
Number of feet = 9 ft.
4. We know that 1 mile = 5280 feet
let x be the number of feet, when added to 8800 feet. will be equal to 8 miles
8800 feet + x feet = 8 miles
8800 feet + x feet = 42240 feet [1 mile = 5280 feet]
x feet = 42240 - 8800
x feet = 33440 ft.
5. We know that 12 inches = 1 feet
let x be the number of inches, when added to 37 inches, will be equal to 5 feet
37 inches + x inches = 5 feet
37 inches + x inches = 60 inches [12 inches = 1 feet]
x inches = 23 inches
6. We know that 1 yard = 3 feet
So, (number of yards)*3 = (number of feet)
Number of yards = number of feet / 3
Number of yards = 73 / 3 = 24.33 yards
7. We know that 1 yard = 3 feet
let x be the number of feet added to 15 feet to make 9 yards
15 feet + x feet = 9 yards
15 feet + x feet = 27 feet [1 yard = 3 feet]
x feet = 12 ft
8. We know that 1 mile = 1760 yards
let x be the number of yards remaining to reach 4 miles
3000 yards + x yards = 4 miles
3000 yards + x yards = 7040
x yards = 4040 yards
9. We know that 1 yard = 3 feet
So, number of yards * 3 = number of feet
replacing the values:
number of yards*3 = 114
number of yards = 114/3
number of yards = 38 yards
10. We know that 1 mile = 5280 feet
let x be the number of feet that must be added to 9000 feet to make 3 miles
x feet + 9000 feet = 3 miles
x feet + 9000 feet = 15840 feet
x ft = 6840 ft
11. We know that 12 inches = 1 feet
let x be the number of inches that must be added to 46 inches to get a length of 9 feet
46 inches + x inches = 9 feet
46 inches + x inches = 108 inches
x inches = 108 - 46 inches
x inches = 62 inches
12. We know that 1 mile = 1760 yards
let x be the number of yards that must be added to 3500 yards to make 2 miles
3500 yards + x yards = 2 miles
3500 yards + x yards = 3520 yards
x = 20 yards
13. We know that 1 ft = 12 inches
So, number of feet * 12 = number of inches
number of feet = number of inches / 12
number of feet in 252 inches
Number of feet = 252/12
Number of feet = 21 ft
14. We know that 1 mile = 5280 feet
let x be the number of feet, when added to 6500 feet, will be equal to 2 miles
x ft + 6500 ft = 2 miles
x ft + 6500 ft = 10560 ft
x ft = 4060 ft
15. We know that 1 mile = 5280 feet
let x be the number of feet, when added to 4500 feet, will be equal to 1 mile
x ft + 4500 ft = 1 mile
x ft + 4500 ft = 5280 ft
x ft = 780 ft
