<u><em>Explanation:</em></u> <u>On Friday:</u> Richard finished 0.25 of the term paper. <u>This means that:</u> Remaining = 1 - 0.25 = 0.75 of the paper
<u>On Saturday:</u> Richard finished of the remainder. <u>This means that:</u> Richard finished
<u>Now, for Sunday:</u> We know that Richard finished 0.25 of the paper on Friday and of the paper on Saturday. <u>This means that:</u> Total finished = 0.25 + = of the paper <u>If he wants to finish it by Sunday, then:</u> He needs to type = 1 - = of the paper