For what value of 'K' will the pair of equations 3x+4y=12 and kx+12=30 does not have a unique solution ?

A 3
B 7.5
C 9
D 12

Correct Answer: 9

3x + 4y = 12 এবং kx + 12y = 30 দুটি সমীকরণ। যদি, 3/k = 4/12 হয় তাহলে সমীকরণ জোটটির অসংখ্য সমাধান থাকবে। এখন, 3/k = 4/12 4k = 12 × 3 k = 36/4 k = 9
Bissoy MCQ
#গণিত #সরল সমীকরণ (Simple/linear equation) #Janata Bank Ltd #Janata Bank Ltd - Asst. Executive Officer - 04.08.2017

Related Questions

For what values of ‘k’ will the pair of equations 3x + 4y = 12 and kx + 12y = 30 not have a unique solution?
A 12
B 9
C 3
D 7.5
100 kg of solution A is mixed with 60 kg of solution B . If solution A has tin and copper in the ratio 1: 4 and solution B has lead and tin in the ratio 3 :2 then what is the amount of tin in the new solution?
A 70 kg
B 36 kg
C 44 kg
D 56 kg
Solution X contains 7% (by weight) of liquid M and solution Y contains 14.5% (by weight) of liquid M. If 3 grams of solution X is mixed with 2 grams of solution Y, then liquid M accounts for what percent of the weight of the resulting solution?
A 6.09%
B 10%
C 10.75%
D 21.5%
Solution X is 10% percent alcohol by volume, and solution Y is 30 percent alcohol by volume. How many milliliters of solution Y must be added to 200 milliliters of solution X to create a solution that is 25 percent alcohol by volume?
A 600
B 800
C 300
D 250
E None of these
In each of these questions , two equations (I) and (II ) are given . You have to solve both the equations and give answer .
A x
B x>y
C x≤y
D x≥y
In the question two equations numbered I and II are given . You have to solve both the equations and given answer.
A x
B x≤y
C x>y
D x≥y
A shopkeeper combined X liters of a solution containing 10% of certain material Q, with 10 liters of another solution that contained 2% of that materiale Q, to produce Z liters of a solution that had 5% of Q. What is the value of X?
A 5 liters
B 6 liters
C 7 liters
D 8 liters
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?
A 10%
B 33.3%
C 40%
D 42.5%
Solution Y is 40 percent sugar by volume and solution X is 20 percent sugar by volume. how many gallons of solution that is 25 percent sugar by volume/
A 75
B 150
C 240
D 450
How many liters of a 40% iodine solution need to be mixed with 35 liters of a 20% iodine solution to create a 35% iodine solution?
A 105
B 49
C 100
D 140

Next steps