a) 49 & 77 b) 29 & 77 c) 90 & 102 d) 39 & 67 correct answer is: a) 49 & 77 Explanation Two numbers ratio are Let, one number is Another number is ...
a) 141 b) 131 c) 121 d) 120 correct answer is: c) 121formula use: (a-b)2=a2 – 2.a.b + b2 EXPLANATION Put the value of Ans : ...
a) b) c) d) correct answer is: d) Explanation Ans:
a) 9 b) 8 c) 6 d) 5 correct answer is: c) 6formula use: (a-b)2 = a2 – 2.a.b + b2 Explanation [L.C.M] [add square in both side] [cross ...
a) 20 & 75 years b) 15 & 80 years c) 25 & 70 years d) 30 & 65 years correct answer is: d) 30 & 65 years Explanation Let, Son present age is Then, father present ...
a) b) c) d) correct answer is: a) Explanation [cross multiply] [interchange] or Ans: Another ...
a) 30 boys b) 35 boys c) 39 boys d) 40 boys correct answer is: a) 30 boys Explanation The ratio of boys and girls is Let the number of boys was and the number ...