China bought 250 kg mangoes at the rate of rupees 40 per kg. she paid Rupee 1 per kg at the fare to bring the mangoes if she sold all mangoes for rupees 1200.a) at what price did she sell 1 kg mangoes? b) what percent profit or loss she get after selling all mangoes?

Cost price of apple=Rs.20per Kg 

∴ cost price of 100kg apples =Rs 100×20

=Rs.2000

52 apples of 100 kg =52×100=40 kgs

Selling price of 40 kg =93 percentage of C.P of 40 kg

=10093×800

=RS.744

Required selling price to get total profit 15percentage

=115 percentage of total cost price

=100115×2000

=RS.2300

∴ Selling price of remaining 60 kg 

=Rs.(2300−744)

=Rs.1556

∴ Requried profit  =(1556−1200)

=Rs.356

∴ Profit percentage =1200356×100

=29.66percentage

investment b is an ordinary annuity with $3,909.64 in the account after one year.

step-by-step explanation:

12.4, 12.387, 12.26, 12.252, 6.241, 6.2, 6.015, 6.009, 1.411, 1.2, 1.056, 1.007, 0.31,   0.13, 0.5, 0.04

step-by-step explanation:

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