High School

A scuba diver dives in a straight line from a boat to a coral reef.

Before the dive, the diver has 2300 litres of gas in his dive tank.

When diving from the boat to the reef, he uses an average of 5.3 litres of gas per metre travelled.

How much gas does the diver have in his tank when he reaches the coral reef?

Give your answer to the nearest litre.

Distance travelled: 28m + 137m = 165m