Which number should replace both the question marks in the following equation? ?/189 = 84/?

(a) ? = 443 × 163 – 186782  = 348913664 – 348867684  = 45980

(b) ?=20/3 ÷ 24/5 =20/6 x 5/24 =25/18 = 1 7/18

(b) ?= 1680x2/5x5/7x3/8= 180

(b) Difference = 270 - 216 = 54 According to the question, 8% of total aggregate marks = 54 Total aggregate marks = 54 x 100/8 = 675

(e) According to the question, (40 – 4)% of x = 261 Max marks = 261/36 x 100 = 725

(d) Total marks obtained by the student = 6 x 64/100 x 150 = 576 Marks obtained in Hindi and English = 25% of 576 = 576 x 25/100= 14

(a) Let the maximum marks be x (265+55) = 40x/100 or 320 x 100= 40x x= 320 x 100/40 = 800

(e) Let the maximum marks be x According to the question, 35x /100 +42 =336 x = 840 

(d) Marks scored by Mathew = 42 + 51 + 58 + 35 +48 = 234 Max.Marks = 60 × 5 = 300 Percentage scored = 234 /300 x 100 = 78%

(b) Marks scored in subject B = 150 × 56% = 84 Total marks scored in all the 3 subjects = (150 × 3) × 54% = 243 Marks scored in subject C...