I need help with this physics question please someone help.?

Rory is tired of being a “good girl” so she

decides to follow Logan on one of his crazy

rich-boy adventures. They leave Yale in the

middle of the semester, fly down to Costa

Rica and travel down the San Juan River. At

one point, Logan is floating down the river in

an inner tube and Rory plans shenanigans.

She is going to jump off of a 4.5-m tall cliff

into the water as close to Logan as possible,

so she has to time her jump just right. Logan

is floating at a lazy speed 2.4 m/s down river

7.5 m from the base of the cliff (see

diagram). Rory has a maximum running

speed of 6.2 m/s if she runs horizontally off

the cliff

How far upstream should Logan be when

she jumps if she is going to achieve her

closest splash?