The rupee was trading strong by 5 paise at 68.67 in the evening session as the dollar edged down in broadly calm currency markets on Friday, with investors focusing on a two-day Group of 20 (G20) summit of finance ministers and central bankers in Shanghai.

The dollar index, which tracks the greenback against a basket of six rival currencies, edged down 0.1 per cent to 97.368 but was up about 0.8 per cent for the week.

The rupee sentiment was also buoyed as the Economic Survey has revised upward India’s GDP growth range to 7 to 7.75 per cent for 2015-16 against earlier government projected growth rate of 7 to 7.5 per cent.

The Economic Survey from the Finance Ministry called for fiscal prudence and stable inflation, while acknowledging the risks to growth, although it also called for a review of India's medium-term fiscal strategy.

The domestic unit opened flat at 68.72 against Thursday’s closing of 68.72 at the Inter-bank Foreign Exchange (forex) market.

It moved in a range of 68.79 and 68.64 before trading at 68.67 at 4.45 pm local time.

Meanwhile, the benchmark BSE Sensex ended higher by 178.30 points or 0.78 per cent at 23,154.30.