Word code = sum of letter positions x number of letters

The same question, asked 3 times: 18 Jul 2023 S2*, 20 Jul 2023 S1*, 20 Jul 2023 S4. Every wording below, oldest first.

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Question 1
18 Jul 2023 S2
21 $In a certain code language, 'ROSE' is coded as ‘228’ and TULIP' is coded as ‘390’. How will 'LOTUS' be coded in that language?$
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Question 2
20 Jul 2023 S1
5 $In a certain code language, ‘BARBIE’ is written as ‘222’, ‘ELSA’ is written as ‘148’. How will ‘ARIEL’ be written in that language?$
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Question 3
20 Jul 2023 S4
15 $In a certain code language, if ‘DXF’ is written as ‘102 and ‘URO’ is written as ‘162’, how will ‘LNZ’ be written in the same code language?$
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Question 1