Final answer:
Alex receives £100. The ratio of their shares is 2:5, and Blake gets £150 more than Alex. By setting up an equation based on the ratio, we find that the value of each part (x) is £50, resulting in Alex's share being 2 times £50.
Step-by-step explanation:
Alex and Blake share money in a ratio of 2:5, which means that for every 2 parts Alex gets, Blake gets 5 parts. Since Blake receives £150 more than Alex, we can use this information to solve for the amount of money Alex receives.
Let the amount Alex receives be 2x and the amount Blake receives be 5x. The difference between what Blake and Alex receive is 3x, which equals the £150 more Blake has.
So, 3x = £150. To find the value of x, we divide both sides of the equation by 3:
x = £150 ÷ 3
x = £50
Now that we have the value of x, we can calculate how much Alex receives by multiplying 2 by £50:
Alex's share = 2x = 2(£50) = £100
Hence, Alex receives £100.