4)A tank is 20m in length, 15m in breadth and 4m in depth. Find the cost of cementing its floor and the four walls at the rate of Rs.50 per sq. m​

You are choosing between two health clubs. club a offers membership for a fee of $ 28 plus a monthly fee of $ 20. club b offers membership for a fee of $ 20 plus a monthly fee of $ 22. after how many months will the total cost of each health club be the same? what will be the total cost for each club? in __ months the total cost of each health club will be the same.