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Four friends, Dallas, Dalton, Dante and Daniel, went to buy some fruits ... as follows:

Dallas : 1 Mango, 1 Apple and 1 Banana.

Dalton : 1 Mango, 5 Apples and 7 Bananas.

Dante : 1 Mango, 7 Apples and 10 Bananas

Daniel : 9 Mango, 23 Apples and 30 Bananas

Dalton spent $ 300 while Dante's expense was $ 390.

How much was Dallas's and Daniel's expense?

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Dallas spent 120 and Daniel 1710[spoiler='Spoiler for Dallas and Daniel

']The difference between Dalton and Dante is 2 apples and 3 bananas and $90 (2A + 3B = 90)

The difference between Dallas and Dante is 6 apples and 9 bananas which is 3 times (2A + 3B = 90)(6A + 9B = 270). therefore the difference in their amounts must be 390 - 270 = 120. Dallas spent 120.

Daniel is about the same

9M + 23A + 30B = Daniel subtract

9(1M + 1A + 1B = 120). 9 times Dallas = 1080

that leaves 14A + 21B which is 7 times (2A + 3B = 90) = 630

1080 + 630 = 1710

Edited by ladydulac
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Four friends, Dallas, Dalton, Dante and Daniel, went to buy some fruits ... as follows:

Dallas : 1 Mango, 1 Apple and 1 Banana.

Dalton : 1 Mango, 5 Apples and 7 Bananas.

Dante : 1 Mango, 7 Apples and 10 Bananas

Daniel : 9 Mango, 23 Apples and 30 Bananas

Dalton spent $ 300 while Dante's expense was $ 390.

How much was Dallas's and Daniel's expense?

Impossible?

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Four friends, Dallas, Dalton, Dante and Daniel, went to buy some fruits ... as follows:

Dallas : 1 Mango, 1 Apple and 1 Banana.

Dalton : 1 Mango, 5 Apples and 7 Bananas.

Dante : 1 Mango, 7 Apples and 10 Bananas

Daniel : 9 Mango, 23 Apples and 30 Bananas

Dalton spent $ 300 while Dante's expense was $ 390.

How much was Dallas's and Daniel's expense?

that is an expensive shop!

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