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1984-07-30
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:Q 1. Write .3% as a decimal. (a) .003 (b) .3 (c) .03 (d) 3 (e) .0003 :RCA 1. (a) .003 Ans. .3 = --- 100 = .003 Ans. Note: rewrite .3% as .3/100 :RA :Q 2. Write 4.5% as a fraction. (a) 4/1000 (b) 45/1000 (c) 5/100 (d) 45/100 (e) 45/10 :RCB 2. (b) 45/1000 Ans. 4.5% = 45/1000 = 4.5/100 = 45/1000 Ans. :RA :Q 3. 40% of 80 = (a) 20 (b) 60 (c) 32 (d) 30 (e) 2 :RCC 3. (c) 32 Ans. % is --- = -- 100 of 40 y --- = -- 100 80 3200 = 100y 32 = y Ans. :RA :Q 4. 120% of 20 = (a) 24 (b) 20 (c) 60 (d) 42 (e) 90 :RCA 4. (a) 24 Ans. % is --- = -- 100 of 120 y --- = -- 100 20 2400 = 100y 24 = y Ans. :RA :Q 5. What percent of 70 is 25? (to the nearest percent) (a) 30 (b) 35 (c) 38 (d) 26 (e) 36 :RCE 5. (e) 36 Ans. % is --- = -- 100 of y 25 --- = -- 100 70 70y = 2500 y = 35 5/7% y = 36% Ans. :RA :Q 6. What percent of 15 is 45? (a) 3000% (b) 30% (c) 3500% (d) 300% (e) 600% :RCD 6. (d) 300% Ans. % is --- = -- 100 of y 45 --- = -- 100 15 15y = 4500 y = 300% Ans. :RA :Q 7. 14 is 170% of what number? (a) 8 4/17 (b) 8 1/10 (c) 9 4/14 (d) 8 (e) 0 :RCA 7. (a) 8 4/17 Ans. % is --- = -- 100 of 170 14 --- = -- 100 y 170y = 1400 y = 8 4/17% Ans. :ET :ET Copyright ARROW INSTRUCTIONAL SYSTEMS July 1983