Mr Tan earns $1120 a month. He spends $530 every month and saves the rest. How much will he save in 4 years?

Sure, here are the steps to solve the problem:

Step 1: Calculate how much Mr. Tan saves each month by subtracting his monthly expenses from his monthly earnings. $1120 (earnings) -$530 (expenses) = $590 (savings per month)

Step 2: Calculate how much he saves in a year. Since there are 12 months in a year, multiply his monthly savings by 12. $590 (savings per month) x 12 (months in a year) =$7080 (savings per year)

Step 3: Calculate how much he saves in 4 years by multiplying his annual savings by 4. $7080 (savings per year) x 4 (years) =$28320

So, Mr. Tan will save $28320 in 4 years.