complementary angles sum up to 90°.
so if one of them is 43°, then the other is just 90 - 43 = 47°.
All together: <span>3x + 0.05 + x + x + 0.10 = 7.50
5x + 0.15 = 7.50
5x = 7.35
x = 1.47
</span>1.47 +0.10=1.57<span>
so, the drink costs 1.57 </span>
15.3................................................
