বিংশ

The cost of operating a Frisbee company in the first year is $10,000 plus $2 for each Frisbee. Assuming the company sells every Frisbee it makes in the first year for $7, how many Frisbees must the company sell to break even?

Frank scored 26 points in a basketball game. All of his points came from either a two-point or three-point basket. If frank scored at least one three-point basket, what is the maximum number of two-point baskets that Frank could have scored?

There are three pumps P, Q and R with a tank. P. Q and R simultaneously can fill the tank in 5 hours. Again P and Q simultaneously can fill the tank in 7 hours. Then how many hours R need to fill the tank alone?

There is equal number of students in each of 10 classes in a school. In a day with bad weather, three classes are 1/2 full, 5 classes are 3/4 full and two classes 1/6 th empty. If the number of absent 6 students is 74 in that particular day, what is the total number of students in 10 class?

R is list of 15 consecutive integers, and T is a list of 21 consecutive integers. The median of the integers in list R is equal to the least integer in list. Combined lists are combined into one th of 36 integers, how many different integers are on the combined list?

A car dealer received a shipment of cars, half of which were black, with the remainder consisting of equal numbers of blue, silver and white cars. During the next month, 70 percent. of the black cars, 80 percent of the blue cars, 30 percent of the silver cars and 40 percent of the white cars were sold. What percent of the cars in the shipment were sold during that month?

The graph above shows the distribution of three different flavors of hard candies-cherry, lemon and lime - in a candy jar. If all the lemon candies are removed and no other candies are added or removed, what fraction of the remaining candies in the jar will be lime candies?

An employee's annual salary was increased $15,000. If her new annual salary now equals $90,000 what was the percent increase?

সুদের হার ৭% থেকে কমে ৫% হলে এক ব্যক্তির আয় ৫ বছরের ৭০ টাকা কমে যায়। তার মূলধন কত?

$2x-\frac{2}{x}=3$ হলে দেখাও যে $8\left(x^3-\frac{1}{x^3}\right)=63$.

একটি আয়তাকার ঘরের দৈর্ঘ্য বিস্তারের দ্বিগুণ। এর ক্ষেত্রফল ৫১২ বর্গমিটার হলে পরিসীমা কত?

একজন দোকান ৫০ কেজির ১ বস্তা চাল ১,৬০০ টাকায় কিনলেন। চালের দাম কমে যাওয়ায় ১৫০০ টাকায় বিক্রয় করেন, তার ক্ষতি/লাভের হার কত?

কোন আসল মুনাফায় ৩ বছরে মুনাফা–আসলে ৫,৫০০ টাকা হয়। মুনাফা, আসলের $\frac{৩}{৮}$ অংশ হলে, আসল ও মুনাফার হার নির্ণয় করুন।

একটি ঘরের দৈর্ঘ্য প্রস্থের ৩ গুণ । প্রতি বর্গমিটার ৭.৫০ টাকা দরে ঘরটির কার্পেট দিয়ে মোড়াতে মোট ১১০২.৫০ টাকা ব্যয় হয়। ঘরটির দৈর্ঘ্য ও প্রস্থ নির্ণয় করুন।

উৎপাদকে বিশ্লেষণ কর: $x^4 -2x^2+1$

$x+\frac{1}{x}=3$ হলে ${\left(x+\frac{1}{x}\right)}^2$ এর মান কত ?

One pump drains one-half of a pond in 3 hours, and then a second pump starts draining the pond. The two pumps working together finish emptying the pond in one and half hour. How long would it take the second pump to drain the pond if it had to do the job alone?

On average, the bottle-nosed dolphin comes up for air once every two minutes; the beluga whale, close relative, comes up for air on average once every five minutes. The number of times a bottle-dolphin would come up for air in a 24 hour period is approximately what percent greater than number of times a beluga whale would come up for air in that same period?

A certain business produced x rakes each month from November through February and shipped $\frac{x}{2}$ rakes at the beginning of each month from March through October. The business paid no storage costs for the rakes from November through February, but it paid storage costs of $0.10 per rake each month from March through October for the rakes that had not been shipped. In terms of x, what was the total storage cost, in dollars, that the business paid for the rakes for the 12 months from November through October ?