With the rapid development of China's economy, China's foreign exchange reserves have become increasingly huge in recent years. According to relevant statistics, as of 20 10 and 12, China's foreign exchange reserves Solution: (1) Assume that the foreign exchange reserves invested in US Treasury bonds are US$ billion.

According to the meaning of the question: ×2%=(32000- )×3%?

Solvable? = 19200

Investing in European government bonds is:? 32000-19200 =12800 (US$ 100 million).

(2) Suppose you invest billions of dollars in gold,

According to the meaning of the question: (19200-) × 2%+12800× 3% +× 4% = 800.

Solvable? = 1600?

A: (1) Invest in US Treasury bonds192 billion US dollars, and invest in European Treasury bonds128 billion US dollars.

(2) We need to invest $654.38+060 billion in gold.