Question

Cut a 60 cm ribbon into rwo such that one part is one-third of the other.

what is the equation?
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Answer 1

x+3x=60

p.s if u have to check

x+3x=60-----1

4x=60

x=15

substitute value of x in the equation 1

15 + 3 (15) =60

60=60

LHS=RHS