Budget, save, spend wisely.

Your class runs a pitha stall at the school fair. You must plan costs, prices and profit. This is a real financial plan.
Expenses: ৳1,850 + ৳250 = ৳2,100. Income: 120 × ৳30 = ৳3,600. Profit: ৳3,600 − ৳2,100 = ৳1,500.
A budget shares income between needs. Total: 12 000 + 10 000 + 4000 + 2500 + 1500 = ৳30,000. Saving 5% each month adds up over a year: ৳18,000.
Interest is extra money for saving. 5% of ৳10,000 = ৳500. In year 2, interest is paid on the bigger amount.
To change dollars to taka, multiply by the rate: $15 × 120 = ৳1800. To change taka to dollars, divide: ৳6000 ÷ 120 = $50. A phone costs £200 online – about 200 × 160 = ৳32 000.