genius on road!!

• Aug 10th, 2006

 

Rs.132

Expentditure on normal tape 1440 @ 24 per tape.

No. of tapes = 60

Savings Rs. 60

Expenditure on Heavy duty tapes = 3/4 of 1440= 1080

Total no of tapes @ 30 per tape=36

Savings Rs. 36*2=72

Total savings, 60+72=132. Answer

jasu85

 Profile Answers by jasu85 

• Aug 10th, 2008

 

Total Expenditure on tapes=Rs.1440

Total Expenditure on heavy duty tapes=3/4*1440=Rs.1080
Total reels of heavy duty tape=1080/30=36
Total savings on heavy duty tape=36*(30-28)=Rs.72

Total Expenditure on regular tapes=1/4*1440=Rs.360
Total reels of regular tape=360/24=15
Total savings on regular tape=15*(24-23)=Rs.15

Total Savings=Rs.72+Rs.15=Rs.87

Harikrishnan

• Sep 7th, 2013

 

for old price
Hd tape = (3/4)*1440 = 1080
Hd tape + Reg tape = 1440
(3/4)*1440 + Reg tape = 1440
SO, Reg tape = 360
HD tape = 1080
no. of reg tape = 360/24 = 15
no. of HD tape = 1080/30 = 36
For new price, Hd tape savings = (30-28) = 2
Reg tape savings = 24-23 = 1
Total savings = (36*2)+(15*1) = 87

Note : here the twist in question is Rs.1440 is the expense of both reg and HD tapes. and not reg tapes alone..so be careful..

Pratiksha Katkhede

• Jan 5th, 2017

 

Total money spend on tapes=1440 Rs
Money spend on heavy tapes= 3/4*(1440)=1080 Rs
So, 1440= 1080 +x (Money spends on simple tapes)
x= 360 Rs.
now,
in 1080 Rs,no of heavy duty tapes get = 1080/30= 36
now saving on 1 heavy duty tape=30-28=2
saving on 36 duty tape= 36*2=72
now, Regular tapes = 360/24=15
saving on 1 tape= 24-23=1 Rs
saving on 15 tapes=15*1 =15 Rs
Total saving= saving on heavy duty tape +saving on simple tapes
= 72 + 15
= 87 Rs