30. One -fourth of a number is 17. What will be 45% of that number? A. 51 B 454 C. 38.6 D. 30.6 E

To solve this problem, we need to find the number first. Let's call the number "x". We are given that one-fourth of the number is 17, so we can write the equation:<br /><br />(1/4)x = 17<br /><br />To solve for x, we can multiply both sides of the equation by 4:<br /><br />x = 17 * 4<br /><br />x = 68<br /><br />Now that we have found the number, we can find 45% of it. To do this, we multiply the number by 0.45 (since 45% is equal to 0.45 as a decimal):<br /><br />45% of 68 = 0.45 * 68<br /><br />0.45 * 68 = 30.6<br /><br />Therefore, 45% of the number is 30.6.<br /><br />The correct answer is D. 30.6.