Question

The sweet shop gave 90 ladoos for the picnic if 15 students go for the picnic each will get how many ladoos

Answer 1

ANSWER

For 400 laddus cost of laddus=Rs10=1000paise

For every 10 additional laddus price of entire lot goes down by 10 paise

Let number of additional laddus =10n

New price after deduction =(1000−10n)paise

∴Total cost=(400+10n)(1000−10n)

100(40+n)(100−n)

=100(−n

2

+60n+4000)

Total cost is maximum at n=

2×(−1)

−(60)

=30

∴Total six of box=400+10n=700