২৮৩৪১
Solution X contains 40% salt and 60% water by weights, Solution Y contains 25% salt and 75% water. If a mixture of X and Y contains 30% salt. What percent of the weight of this mixture is solution X?
উত্তর
33.3%
২৮৩৪২
An iron rod that weight 24 kg is cut is cut into two pieces so that one of these pieces weight 16 kg and is 34 m long. If the weight of each piece is proportional to its length, how longis the other piece?
উত্তর
17 m
২৮৩৪৪
A student's marks were wrongly entered as 83 instead of 63. Due to the error the average marks for the class got increased by 0.5. Find the number of students in the class.
উত্তর
40
২৮৩৪৫
If p and n are integers such that p> n> and p2- n2 = 12, which of the following value of p n?
উত্তর
2
২৮৩৪৭
By mixing two qualities of pulses in the ration 2:3 and selling the mixture at the rate of Tk. 22 per kilogram, a shopkeepers makes a profit of 10%. If the cost of the smaller quantity be TK. 14 per kg the cost in Tk per kg of the larger quantity is:
উত্তর
24
২৮৩৪৯
দুট নল দ্বারা একটি চৌবাচ্চা যথাক্রমে ১০ ও ১৫ ঘন্টায় পানি পূর্ণ করে। নল দুটি একত্রে খোলা রাখলে চৌবাচ্চাটি কত ক্ষণে পূর্ণ হবে?
উত্তর
৬ ঘন্টা
২৮৩৫০
Jamal covered a distance of 340 miles between ciry A and B taking a total of 5 hours. If part of the distance was covered at 60 miles per hours speed and the balance at 80 miles per hour speed, how many hours didhe travel at 60 miles per hour?
উত্তর
3