45% of a number is 255.6. What is 25% of that number? (a) 162 (b) 132 (c) 152 (d) 142 (e) None of these

(c) Let the number of hens = x  Number of goats = 43 – x  According to the question, x × 2 + (43 – x) × 4 = 142  or, 2x +...

(a) Let the the number be = x According o the question, x2 – 262 = 549 or, x2 – 676 = 549 or, x2 = 549 + 676 = 1225 or, x = √1225...

(b) ? = 7857 + 3596 + 4123/96 =15576/96 =162.25

(b) Let the number be x. x2 + 612 = 5242 x2 = 5242 – 3721 = 1521 x = 39

(b) 722 Let number be x 56% of a number = 1064 \(\frac{56}{100} \times x = 1064\) \(x = 1064 \times \frac{100}{56}\) x = 1900 ∴ number = 1900 38% of a number = 38% of 1900  = \(1900...

(a) Let the number be = x x = (153x4x100x100)/(3x15x40)= 3400

(a) Let the number be = x According to the question, x/8 = 17.25 or x = 17.25 x 8 = 138 73% of 138 = 138 x 73/100= 100.74

(b) Difference in % = 42 – 28 = 14% Number = 210 x 100 / 14= 1500 Required answer = 59/100 x 1500 = 885

(e) According to the question, number x 56/100 = 463.68 number = 463.68 x 100/ 56= 828 25% of x = 828 x 25/100 = 207

(e) The series is × 1.5 The wrong number is 366 It should be 243 × 1.5 = 364.5