Question

Natalie picked 135 berries in 15 minutes. If she continues picking at that rate, how long will it take her to pick 486 berries?

Answer 1

`\begin{array}{ccc}135\ berries&-&15\ min\\\\486\ berries&-&\ x\ min\end{array}\ cross\ multiply\\\\\\135x=15*485\\\\135x=7275\ \ \ \ \ |divide\ both\ sides\ by\ 135\\\\x=(7275)/(135)\\\\x=(485)/(9)\\\\x=53(8)/(9)\ (min)\approx54\ (min)`

Answer 2

We can use proportion to solve it

`135 berries -------------15min`

`486 berrier --------------x`
Our x is equal to =
`x= (486*15)/(135) =54`min
Its our result