Both players, currently ranked two in the Indian Golf Union Order of Merit, ended the three-day tournament at 15-Par 303.
IGU Order of Merit Leaders, Shubham Narain and Ridhima Dilawari secured 15th place for India with three-day total of 16-over par 304 at the Par-72 Sunrise Golf & Country club here.
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The Championship had a total of 25 teams and was represented by over 13 countries.
In the individual strokeplay boys championship, Karandep and Shubham finished tied 7th and tied 12th, respectively while in the individual strokeplay girls championship, Ridhima and Aditi finished tied 7th and 15th, respectively.
17-year-old Aditi, from Bengaluru, didn't have a very impressive round as she had a single birdie on 10th and made bogeys on 4th, 5th, 13th, 15th, 17th and 18th while Chandigarh's Karandeep, 16, bogeyed 4th, 5th, 14th, 15th and made a single birdie on 6th.
"I didn't play as well as I could have. I missed a few easy putts today but overall I was happy with my game and iron play," said Aditi, who also won the 2015 St. Rule Trophy at St. Andrews last month.
The youngest member of the squad, Karandeep said: "I think I played pretty decent but made some silly mistakes. My hitting was good and I need to improve my putting to perform in international tournaments like these. This was a tremendous learning experience."
Delhi's Shubham, 17, who was playing well in the front nine after shooting a birdie on 6th, suffered a triple bogey on 9th followed by bogeys on 10th, 11th, 12th and then managed to convert another birdie on 17th for four-over 76.
His teammate Ridhima, 17, also had a blemish free front nine but had a rollercoaster ride in back nine as she made bogeys on 11th, 13th, 14th, 17th, 18th and birdies on 12th, 16th for three-over 75.
Leading from day one, Korean team of Hyun-Kyung Park and Young-woong Kim won the inaugural championship at eight-under 280.