Tokyo  - Tokyo stocks extended the week's positive trend Friday as hopes for a global recovery rose after the London Group of 20 summit of influential world leaders.

The benchmark Nikkei 225 Stock Average index was up 49.94 points, or 0.57 per cent, to 8,769.72 by mid-trading.

The broader Topix index of all first-section issues also rose 7.29 points, or 0.88 per cent, to 833.98.

Investors were encouraged by the reassurances of the G20 leaders to pull out all stops to kick-start the slowing global economy.

On currency markets at 9 am (0000 GMT), the dollar traded at 99.65-70 yen, up from Thursday's 5 pm quote of 99.12-14 yen, but traded above 100 yen earlier in the day for the first time in six months.

The euro traded at 1.3430-35 dollars, up from Thursday's 5 pm quote of 1.3253-54 dollars, and at 133.88-93 yen, up from 131.37-41 yen. (dpa)