Every day you are visiting a convenient store. On the way to the store, you need to cross the street at a crossing with

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Every day you are visiting a convenient store. On the way to thestore, you need to cross the street at a crossing with a trafficlight. The traffic light works in the mode: red light (forpedestrian) is "on" for 170 seconds, green light (for pedestrian)is "on" for 30 seconds. How many seconds on average do you stand atthis traffic light? (We believe that you cross the road only togreen, and do it instantly).
Average time = ? sec
To round the answer to the second decimal: 0.01