Break Even = Fixed costs /Contribution per unit.
First work out your contribution.
Contribution = Price per unit - V.Cost per unit.
£40 - £25 = £15
Fixed Costs = £360,000
£360,000 / 15 = 24,000 units.
Since you want the break even in sales you need to multiply the units by the selling price.
24,000 x 40 = £960,000.
Hope this helps!