Musashi is a retired teacher who lives in Montreal and does some consulting work for extra cash. At a wage of $25 per hour, he is willing to work 6 hours per week. At $35 per hour, he is willing to work 16 hours per week. Using the midpoint method, the elasticity of Musashi's labour supply between the wages of $25 and $35 per hour is approximately , which means that Musashi's supply of labour within this wage range is .