if it takes 7.2 pounds of seed to plant a acre of grass,how many acres of grass can be planted with 8.64 pounds of seed

Question

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Answer 1

1.2 acres

8.64/7.2 = 1.2

use a calculator, do long division, or try to reduce the fraction further by noticing both numerator and denominator are divisible by 9. if the digits add to 9, the number is divisible by 9. 8+6+4 = 18. 7+2=9

.96/.8, now divide both by 8 to get

.12/.1, now mulltiply both by 10

to get 1.2/1 = 1.2