২৭৪১
Dr. Kramer plans to invest $20.000 in an account paying 6% interest annually. Hows much more must she invest at the same time at 3% so that her total annual income during the first year is 4%of her entire investment?
উত্তর
$40,000
২৭৪২
Two dogsled teams raced across a 300 mile course in Wyoming. Team A finished the course in 3 fewer hours than did team B. If team A's average speed was 5 miles per hour greater than that of team B, what was team B's average speed, in miles per hour?
উত্তর
20
২৭৪৪
`If 11 persons meet at a reunion and each person shakes hands exactly once with each of the others, what is the total number of handshakes?
উত্তর
55
২৭৪৫
In a rare coin collection, all coins are either pure gold or pure silver , and there is initially one gold coin for every three silver coins. With the addition of 10 more gold coins to the collection, the ratio of gold coins to silver coins is 1 to 2. Based on this information , how many total coins are there now in this collection (after the acquisition)?
উত্তর
90
২৭৪৬
when the integer k is divided by 7, the remainder is 5. which of the following expressions below when divided by 7, will have remainder of 6? I. 4k +7 , II. 6k + 1 III. 8k +1
উত্তর
I and II only
২৭৪৭
Timothy leaves home for school, riding his bicycle at a rate of 9 miles per hour. Fifteen minutes after he leaves, his mother sees a Timothy's math homework lying on his bed and immediately leaves home to bring it to him. If his mother drives at 36 miles per hour, how far (in terms of miles) must she drive before she reaches Tmothy?
উত্তর
3
২৭৪৮
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 coffeee is decaffeinated?
উত্তর
28%
২৭৪৯
A couple spent $244 in total while dining out and paid this amount using a credit card. The $264 figure included a 20 percent tip which was paid on top of the price of the food which already included a sales tax of 10 percent. what was the actual price of the meal before tax and tip?
উত্তর
$204
২৭৫০
One-fifth of the batteries produced by an upstart factory are defective and one -quarter of all batteries produced are rejected by the quality control technician. If one-tenth of the non-defective batteries are rejected by mistake and if all the batteries not rejected are sold, then what percent of the batteries sold by the factory are defective?
উত্তর
4%