Start learning 50% faster. Sign in now
Get Started with ixamBee
Start learning 50% faster. Sign in nowFrom statement I: People becomes 9 from 7, and average decreases by 5. Let ‘n’ is previous average and then ‘n - 5’ is new average. So Sum of ages of 2 new people becomes 9 × (n – 5) – 7 × n which is given 25 So 9 × (n – 5) – 7 × n = 25 So 9n – 45 – 7n = 25 or 2n = 25+45= 70 So, n = 70/2 = 35 So average of new group = 35 – 5 = 30 From statement II: Total age of 7 people is 245 years, so their average = 245/7 = 35 So, average of new group = 35 – 5 = 30 So answer can be determined by either of statement I or II.
(512) (2/3) × √64 ÷ (512) (1/3) = (64) (?/2) ÷ (2)6
9 × 4 ? ÷ 16 = 144
(6.013 – 20.04) = ? + 9.98% of 5399.98
What will come in the place of question mark (?) in the given expression?
(20% of 820 – 56 + 11 × 8) 1/2 = ? – 62
Find the value of ‘a’ in the following expression:
12 × a × 24 ÷ 8 + 72 – 46 = 170
72 + 122 - 25% of 600 = ?
192.251 + 326.233 + 125.021 + 19.273 = ?
55.55% of 30000 – 1111 = ? × 1111
(23.95)2 – (25.006)2 + (8.0099)2 – (7.07)2 = ? - (14.990)2