A district's yearly outlay is split as 42% for roads, 28% for water supply and 18% for schools, with the balance of ₹19.2 crore going to health. What is the district's yearly outlay?

The three named heads take 42 + 28 + 18 = 88%, so health takes 100 - 88 = 12%. Then 0.12 $x$ outlay = 19.2, giving outlay = 19.2/0.12 = ₹160 crore. Check: 12% of 160 = 19.2. ₹240 crore and ₹96 crore come from mis-adding the three shares (to 92% and to 80%), and ₹106.67 crore divides by the 18% schools share instead of by the leftover.