There are 12 nickels, dimes and quarters whose total value was 1.55 the number of nickles exceeds the number of quarters by 1, how many of each coin was there

1. the wheeling bridge in west virginia is about 307 meters long. if you walk with a stride of about meter, about how many steps would it take you to cross this suspension bridge?

Need asap. solve for the following inequality

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.