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"1. when 2/7 is subtracted from a fraction, the result is 5/4. what is the fraction? 2. The Alcantara family owns 3/4 of the stock in a ce

"1. when 2/7 is subtracted from a fraction, the result is 5/4. what is the fraction? 2. The Alcantara family owns 3/4 of the stock in a certain company. He wants to distribute his stocks among his 3 children. Mr. Alcantara gives 3/10 of the stocks to his eldest child and 1/4 of the stocks to his second child. what part of the stocks is given to his third child? 3. One section of a concrete fence uses 2 1/4 bags of cement. How many bags of cement are used if there 7 sections? 4. the product of two numbers is 12 5/6. if one number is 3 1/3. what is the other number? 5. the enrollment for grade 5 last year was 280. this year, the increase is 7/20 of last year's enrollment. how many grade 5 pupils are there this year?"

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Guest [Entry]

1. x - 2/7 = 5/4 x = 5/4 + 2/7 x = 35/28 + 8/28 x = 43/28 x = 1 15/28 answer2. Third child = 3/4 - 3/10 - 1/4 = 30/40 - 12/40 - 10/40 = 8/40 = 1/5 of stocks3. 2 1/4 bags of cement per section 9/4 × 7 = 63/4 or 15 3/4 bags of cement to be used for 7 section4. x(3 1/3) = 12 5/6 x(10/3) = 77/6 10x/3 = 77/6 10x = 77/2 x = 77/20 x = 3 17/205. No. of pupuls = 280 + (7/20)(280) = 280 + 98 = 378