A seven-layer drink costs 70 taka , or about one u.s. dollar .

一杯七层茶的价格是70塔卡，折合约1美元。

She earns about 300-500 taka per day ( $ 0.85 $ 1.22 ) serving around 15-20 customers every day .

她每天要服务15-20名顾客，这样大约可以赚300-500塔卡（0.85美元-1.22美元）。

The currency , the taka , is falling . So are foreign-exchange reserves .

孟加拉的货币卡塔，正在贬值，外汇储备量减少。