Have you used density tables?
:O No!
It's a fairly simple question. If 100 g of the soln contains 60.16 g of H
2SO
4 and 100 mL of the solution contains 90.24 g of H
2SO
4, all one needs to find out is how many mL of soln corresponds to 60.16 g H
2SO
4, because this volume of soln which corresponds to 60.16 g of H
2SO
4, also weighs 100 g (given).