Margaret had some mangoes. She sold f of them at $3 each. She collected $84 from the sale of the rest of the mangoes. What was the total amount of monney she receuived in terms of f?
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Consider he has x dollars .
He saves 10 % for taxi fare .So he is left with 0.9x dollars.
If we go by logic cost of 1 mango and 1 orange will remain constant.
So, cost of 1 mango =x/40.He took 20 mangoes costing 20* x/40 =x/2=0.5x
Hes left with 0.9x-0.5x=0.4x dollars.
The question is how many oranges can he buy with 0.4x dollars .If he can buy 1 orange for x/50 dollars ,he can surely buy 50/x*0.4x =20 oranges with 0.4x dollars he has.
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