Sean is choosing what size gloves to order from an online store. He estimates that his hand is 20 centimeters long. When he meas
ures with a ruler, however, he finds that his hand is actually 18 centimeters long. What is the percent error for his estimate?
1 answer:
Answer:
10%
Step-by-step explanation:
Sean first thought that his hand was 20 cm so:
20cm
When he measures with a ruler, he gets 18 cm so:
18cm
The equation is really simple, and you basically do:
20/20 - 18/20 = 2/20 = 1/10 = 10%
The equation is:
1- x/y
x equals the new number
y equals the original number
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