Question

If Jennifer made a fruit juice using red and green grapes. Thirty percent of the grapes are green.If she used a total of 60 grapes , how many red grapes should she use?

Answer 1

`p\%=(p)/(100)\\\\30\%=(30)/(100)=0.30=0.3\\\\30\%\ of\ 60=0.3\cdot60=18\leftarrow\ number\ of\ green\ grapes\\\\60-18=\boxed{42}\leftarrow ANSWER`