The numbers which go into both1600 and 2000 are:
1, 2, 4, 5, 8, 10, 16, 20, 25, 50, 80, 100, 200, 400
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10, 100, 2, 1, 16... and more
1600/ 80% = 2000
To find 40 percent of a number, multiply the number by 0.4. In this instance, 0.4 x 1600 = 640. Therefore, 40 percent of 1600 is equal to 640.
4/5 of 2000 pounds = 4*2000/5 pounds = 1600 pounds
To find 4 percent of a number, multiply the number by 0.04. In this instance, 0.04 x 1600 = 64. Therefore, 4 percent of 1600 is equal to 64.