২৯১১
How many liters of a 60% iodine solution need to be mixed with 30 liters of a 30% iodine solution to create a 50% iodine solution?
উত্তর
60
২৯১২
A farmer with 1,350 acres of land had planted his fields with corn, sugar cane, and tobacco in the ratio of 5:3:1, receptively, but he want to make more money, so he shifted the ratio to 2: 4:3 respectively. How many more acres of land were planted with tobacco under the new systems?
উত্তর
300
২৯১৩
ABCD is a square of side 8 AFC is an are of a cricle with the center at D and radius 8. AGC is an are of a circle with the center at B and radius 8. Find the area of AFCG.
উত্তর
32 pie - 64
২৯১৪
A grocer has 400 pounds of coffee in stock, 20 percent of which is decaffeinated. If the grocer buys another 100 pounds of coffee of which 60 percent is decaffeinated, what percent, by weight, of the grocer's stock of coffee is decaffeinated?
উত্তর
28%
২৯১৬
Last year's receipts from the sale of greeting cards during the week before Mother's day totaled $ 189 million. which represented 9 percent of total greeting card sales for the year totaled how many million dollars?
উত্তর
2,100
২৯১৭
Two boards are being cut for a construction project. If the total length of the boards is 100 inches and the shorter board is 5 inches less than half the length of the longer board, what is the length of the shorter board?
উত্তর
70 inches
২৯১৮
The Mega Tek Corporation is displaying its distribution of employees by department in a circle graph. The size of each sector of the graph respresenting a department is proportional to the percentage of total employees in that department. If the section of the circle graph representing the manufacturing department takes up 72 degree of the circlet , what percentage of Mega Tek employees are in manufacturing?
উত্তর
20%
২৯১৯
In a sample of associates at a law firm, 35 percent are second yer associates, and 55 percent are not first -year associates. That percentage of the associates at he law firm have been there for more than two years?
উত্তর
20
২৯২০
If 20 typists can typ 48 letters in 20 minutes, then how many letters will 30 typists working at the same rate complete in 1 hour?
উত্তর
216