In triangle DeltaABC, points E and F lie...

In triangle `DeltaABC`, points E and F lie on sides AB and AC such that `EF||BC`. If `EF:BC=3:7` then what is the ratio of areas of `DeltaAEF` and trapezium EBCF ?

`9:49`

`9:58`

`40:49`

`9:40`

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