1. Seven friends spent Rs 14 each on a project and the eighth friend spent Rs 21 more than the average expenditure of all eight of them. What is the amount of total money (in Rs) spent by them?
Write Comment
Comments
By: anil on 05 May 2019 01.47 am
Let amount spent by the 8th friend = Rs. $$x$$ Amount spent by the 7 friends = $$14 imes7=Rs.$$ $$98$$
Now, average expenditure of all 8 of them = $$frac{(x+98)}{8}$$ According to ques, => $$x-frac{(x+98)}{8}=21$$ => $$frac{8x-x-98}{8}=21$$ => $$7x-98=21 imes8=168$$ => $$7x=168+98=266$$ => $$x=frac{266}{7}=38$$ $$ herefore$$ Total amount spent by all of them = Rs. $$38+98=Rs.$$ $$136$$ => Ans - (B)
Terms And Service:We do not guarantee the accuracy of available data ..We Provide Information On Public Data.. Please consult an expert before using this data for commercial or personal use
Now, average expenditure of all 8 of them = $$frac{(x+98)}{8}$$ According to ques, => $$x-frac{(x+98)}{8}=21$$ => $$frac{8x-x-98}{8}=21$$ => $$7x-98=21 imes8=168$$ => $$7x=168+98=266$$ => $$x=frac{266}{7}=38$$ $$ herefore$$ Total amount spent by all of them = Rs. $$38+98=Rs.$$ $$136$$ => Ans - (B)