In the adjoining A ABC, P and Q are the
mid-points of the sides AB and AC respectively
and R be any point on BC. Prove that,
1
area of A PQR =
area of A ABC
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it takes John 16 minutes longer than Sally to mow the lawn. If they work together they can mow the lawn in 15 minutes. How long will it take each to mow the lawn if they work alone?
Please help
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