Answer:
37.5 litres
Explanation:
Given that:
House was painted blue and white in the ratio ;
Blue : white = 5 : 2
Volume of white paint used = 15 litres
Sum of ratio = 5 +2 = 7
Volume of white paint used = (white ratio / Total ratio) * total volume of paint used
Let total volume used = x
15 = (2 /7) * x
15 = 0.2857142 * x
x = 15 / 0.2857142
x = 52.5 litres
Hence, volume of blue paint used :
Total volume - volume of white paint used
52.5 - 15
= 37.5 litres
