Which steps could be used to solve this story problem? zoe is looking after her neighbors' gardens. it takes her 15 minutes to weed each garden. it takes her 10 minutes to water each garden and clean up the area. how long will zoe spend looking after the gardens of 5 neighbors? choose all answers that are correct. a. add 15 and 10. multiply the sum by 5. b. multiply by 15 by 5. multiply 10 by 5. add the products together. c. add 15 and 5. add 10 and 5. multiply the sums together. d. multiply 15 by 5. add 10 and 5. add the product and sum together.