## M S Mustafaa is teaching live on Unacademy Plus

M S MUSTAFA Quant & Reasoning Mentor (M.sc in Clinical Research from Cranfield University UK) B.ed, PGDCRM) SSC-CGL 2013 (TIER 1 & TIER 2) IBPS PO 2( WRITTEN & INTERVIEW ) FCI 2012 STAGE 1 & STAGE 2) RAILWAY NTPC 2012 (STAGE 1 & STAGE 2)

AVERAGE LESSON 02

AVERAGE (3 T) BASICS IN A VERY EASY WAY

TVPE TWO NEW ENTRy IN ANy GROUP

Average of 7 muubers is 8 if one more number is added, then average becomes 9,find new number. a.12 C. 16 b.11 d.14

Average of 7 numbers is 8,if one more number is added, then average becomes 9,find new number sum of 7 numbers7*8 56 sum of 8 nymbers 8*9 72 new number 72-56 16

Average of 7 numbers is 8,if one more number is added, then average becomes 9,find new number. avearge of 7 numbers is 8 all 7 having a value of8 on adding new auerage increase by auearge becomes 9 (new number also having a value 9) new number spend 7 from its ualue to increase av of 7 old number so new number is 9+7 16

Sachin having certain average for his 11 innings,in his 12th inning he scored 120 runs & increase his average by 5 runs,find his new average SSc 2013 a.60 C. 65 b.62 d. 66

batting avearge total runs scored total innings played-not out innings

Sachin having certain average for his 11 innings,in his 12th inning he scored 120 runs & increase his average by 5 runs,find his new average let av upto 11 innings x total runs 11x new au after 12th inning = K+5 total runs12(x+5) 111x+120 = 12(x-5) | |11x+120 = 12x+60 60 new au = 60+5=65