sack of rice costing $62 and $55 per sack are mixed together in the ratio 5;2 , find the selling price of the mixture per sack in order to make a profit of 35 %​

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.