A piece of string was cut into two pieces in the ratio 3:5. if the shorter piece was 81 cm, what is the lenghth of the string before it had been cut?
a. 1216 cm
b. 256 cm
c. 297 cm
a. 1216 cm
b. 256 cm
c. 297 cm
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Problem:
A piece of string was cut into two pieces in the ratio 3:5. if the shorter piece was 81 cm, what is the length of the string before it had been cut?
Solution:
3:5 = 81:x
3/5 = 81/x
3x = 5(81)
3x = 405
x = 405/3
x = 135
What is the length of the string before it had been cut?
= 81 + 135
= 216 cm
Answer:
216 cm
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