By selling mangoes 22 for a rupee a man loses 30%.How many for a rupee should he sell in order to gain 40%?
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SP of 22mangoes = 100p
SP of one mango = 100/22
CP of one mango = a
100/22 /a x 100 = 70
a = 10000/(22x70) = 6.49
CP of one mango = Rs. 6.49
SP to gain 40% = b
b/6.49 x 100 = 140
b = 14x 6.49/10 = 9.09
SP should be for one mango = Rs. 9.09
Number of mangoes for one rupee (100p) = 100/9.09 = 11 mangoes
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