A man spends 42% of his salary on food and 12% on transport. if the amount he spent on food is Rs 16800, how much was his transport cost?

The man's transport cost is Rs 4800

Step-by-step explanation:

Step 1: Given that the amount the man spent on food = Rs 16800 which is 42% of his salary. Form an equation where his salary is x.

42% of x = 16800

42/100 × x = 16800

42x = 1,680,000

x = 1,680,000/42 = Rs 40,000

∴ Salary is Rs 40,000

Step 2: Calculate the man's transport cost.

12% of 40000 = 12/100 × 40000 = Rs 4800

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