The first stage of a rocket burns 28 seconds longer than the second stage. If the total burning time for both stages is 152 seconds then how long does each stage burn? Solve.

The 1st stage: x, the 2nd stage: y.

x + y = 152

x = y + 28

y + 28 + y = 152

2 y = 152 - 28

2 y = 124

y = 124 : 2 = 62

x = 62 + 28 = 90

Answer: the first stage burns 90 seconds and the second burns 62 seconds.