Your answer is $28
60% as a decimal is 0.6
70 x 0.6 = 42
That is the amount taken off the full price.
70 - 42 = 28
Another way to solve is by considering that if 60% of the price is gone, 40% remains. Then you can multiply by 0.4
70 x 0.4 = 28
Please let me know if you have any questions