Kindl help me to explain how could the average score here is 2.25 as mine result was only 2.2. Thank you

Applying scoring models - example for weighted factor scoring model " The proposed project "TRITON" is going to start 2020 At the beginning of the year, new software licenses are bought for 25k EUR " In 2020, expected project costs are 150k EUR for staff and other resources. The project will not create any benefit in 2020 In 2021, expected project costs stay at 150k EUR. However, business will be able to create benefits of 50K EUR. The project will end in 2021 Business expects to benefit from TRITON from 2022 to 2025 with 75k EUR per year TRITON will have positive impact on customer satisfaction and no impact on employee satisfaction . Management defines the following factors, scales, and weight Initial costs; weight: 20% [1: >50k EUR | 2: 10-50k EUR | 3: 150k EUR | 2: 50-150k EUR | 3: 50k EUR] . This score needs to be Customer satisfaction impact; weight: 15% compared with other 3 projects [1: negative | 2: none | 3: positive] Employee satisfaction impact; weight: 5% [1: negative | 2: none | 3: positive]