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পানি ও চিনির একটি মিশ্রণে পানি ও চিনির অনুপাত ৮ঃ৩। যদি এটাতে ২ কেজি চিনি যোগ করা হয় তাহলে তাদের অনুপাত হয় ২ঃ১। মূল দ্রবণে চিনির পরিমাণ কত কেজি ছিল ?
জুয়েলের বয়স তার পুত্র সুমন এর বয়সের দ্বিগুণ ।১০বছর পূরবে তাদের বয়সের অনুপাত ছিল ৮ঃ৩ । জুয়েল এর বর্তমান বয়স কত ?
2NH3+CO2→180∘C,130 atmX→180∘C,130 atmY.এখানে Y যৌগটি হলো-
The following table shows the daily seats occupancy in different classes of a train. Numbers in the bracket represent the total seats available for a particular class. Day 2nd Class Non-AC (900) 1st Class Non-AC (500) AC III Tier (500) AC II Tier (250) AC 1st Class (150) Monday 850 460 480 240 145 Tuesday 840 400 450 230 120 Wednesday 830 390 480 220 130 Thursday 790 480 490 250 125 Friday 840 470 500 210 130 What is the ratio of number of seats that remained vacant in all the Non-AC classes on Wednesday and Thursday taken together to number of seats remained vacant in AC classes on Monday, Tuesday and Friday?
The following table shows day-wise number of seats occupied of different classes in a train. Numbers in bracket represent the total seats available in a particular class. Day 2nd Class Non-AC (900) 1st Class Non-AC (500) AC III Tier (500) AC II Tier (250) AC 1st Class (150) Monday 850 460 480 240 145 Tuesday 840 400 450 230 120 Wednesday 830 390 480 220 130 Thursday 790 480 490 250 125 Friday 840 470 500 210 130 How many seats remained vacant taking all the days together in non-AC classes?
The heights of some girls in a school were noted and the data obtained are as shown in the table. Height (in cm) 125 – 130 130 – 135 135 – 140 140 – 145 145 – 150 150 – 155 Number of girls 12 16 20 29 15 8   How many girls have a height of 135 cm or more but less than 150 cm?
Sunita appeared for a test consisting of 260 questions and answered 40% of the first 130 questions correctly. What percentage of the rest 130 questions must she answer correctly so as to score 60% in the entire test?
Study the following table and answer the question: Number of students enrolled for Vocational Courses (VC) in five institutes - A, B, C, D & E.   Year Institute 2013 2014 2015 2016 2017 2018 A 120 135 130 135 128 140 B 125 132 138 132 135 142 C 125 120 125 138 140 135 D 100 125 122 140 128 138 E 105 110 115 147 130 145 The total number of students enrolled for VC in institute C in 2013, 2014 and 2017 is what percent of the total number of students enrolled in all the five institutes in 2018?
Study the following table and answer the question: Number of students enrolled for Vocational Courses (VC) in five institutes - A, B, C, D & E. Year →  Institue ↓ 2013 2014 2015 2016 2017 2018 A 120 135 130 135 128 140 B 125 132 138 132 135 142 C 125 120 125 138 140 135 D 100 125 122 140 128 138 E 105 110 115 147 130 145   The total number of students enrolled for VC in institutes A, B and D in 2015 is what percent more than the total number of students enrolled in institutes C and E in 2018? (correct to one decimal point)
Study the following table and answer the question: Year →  Institue ↓ 2013 2014 2015 2016 2017 2018 A 120 135 130 135 128 140 B 125 132 138 132 135 142 C 125 120 125 138 140 135 D 100 125 122 140 128 138 E 105 110 115 147 130 145 Number of students enrolled for Vocational Courses (VC) in five institutes - A, B, C, D & E. What is the sum of the average number of students enrolled for VC in institute B in 2014, 2015 and 2017 and the average number of students enrolled in institute E in 2013 and 2018?