jcnigrelle jcnigrelle 19-10-2022 Mathematics contestada A boating center rents out dinghy , kayaks, and kneeboards for 4 hours. The cost for renting a dinghy is $30 more than the cost of renting a kayak. Group rented 3 dinghies and 2 kayaks. The total cost was $315. What is the cost for renting a kayak?