TAILIEUCHUNG - Wiley The Official Guide for GMA Review 12th Edition phần 5

Giải quyết các phương trình đầu tiên cho x cho x = 50n. Sau đó, thay thế 50n cho x trong phương trình thứ hai đưa ra sau đây có thể được giải quyết cho n: 50n + 90 55 = n +1 55 (n + 1) = 50n + 90 55n + 55 = 50n + 90 5n = 35 n = 7 nhân cả hai bên (n + 1) phân phối trừ 55 50n và 55 của cả hai bên chia cả hai vế cho 5 | Data Sufficiency Answer Explanations 142. What amount did Jean earn from the commission on her sales in the first half of 1988 1 In 1988 Jean s commission was 5 percent of the total amount of her sales. 2 The amount of Jean s sales in the second half of 1988 averaged 10 000 per month more than in the first half. Arithmetic Applied problems Let A be the amount of Jean s sales in the first half of 1988. Determine the value of A. 1 If the amount of Jean s sales in the first half of 1988 was 10 000 then her commission in the first half of 1988 would have been 5 10 000 500. On the other hand if the amount of Jean s sales in the first half of 1988 was 100 000 then her commission in the first half of 1988 would have been 5 10 0000 5 000 NOT sufficient. 2 No information is given that relates the amount of Jean s sales to the amount of Jean s commission NOT sufficient. Given 1 and 2 from 1 the amount of Jean s commission in the first half of 1988 is 5 A. From 2 the amount of Jean s sales in the second half of 1988 is A 60 000. Both statements together do not give information to determine the value of A. Therefore 1 and 2 together are NOT sufficient. The correct answer is E both statements together are still not sufficient. 143. The price per share of Stock X increased by 10 percent over the same time period that the price per share of Stock Y decreased by 10 percent. The reduced price per share of Stock Y was what percent of the original price per share of Stock X 1 The increased price per share of Stock X was equal to the original price per share of Stock Y. 2 The increase in the price per share of Stock X 10 was 11 the decrease in the price per share of Stock Y. Arithmetic Algebra Percents Applied problems Equations Let x represent the original price per share of Stock X. The amount that Stock X increased per share can then be represented by and the increased price per share of Stock X by . Let y represent the original price per share of Stock Y. The amount .

TỪ KHÓA LIÊN QUAN
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.