Since 2015, tinatanong na sa akin kung paano mag-solve ng ganitong klaseng tanong. You can actually solve it a number of ways.
You can solve it by converting the percentage to a decimal. You can also use Ratio Rotation to solve it. Watch this video to learn different ways to solve percentage questions.
Pick and choose which method works best for you and practice para bumilis ka pa.
You can use the following free worksheets to practice. Nasa second page ang answer key.
Keep working at it para pagdating sa exam ay di ka na masyadong kabahan sa ganitong question.
Happy learning!