Question

calgary’s average rainfall is 300 mm during the summer. if one model of global warming predicts that the prairies will receive 6.1% less rain during the summer in 30 years, how much less rain is calgary predicted to receive?

Explanation:

Step1: Find the amount of reduced rainfall

To find how much less rain Calgary will receive, we calculate 6.1% of the current average rainfall (300 mm). The formula for percentage of a number is $\text{Percentage} \times \text{Number}$, so we calculate $6.1\%$ of $300$. First, convert $6.1\%$ to a decimal: $6.1\% = 0.061$. Then multiply by 300: $0.061 \times 300$.

Step2: Calculate the product

$0.061 \times 300 = 18.3$ (mm). This is the amount of less rain predicted.

Answer:

18.3 mm