Answer :
so 100 seconds total
55 seconds used
you must beat the level in LESS THAN so
x= times you have
55+x<100
subtract 55 form both sides
x<45
so you have to take less than 45 seconds
55 seconds used
you must beat the level in LESS THAN so
x= times you have
55+x<100
subtract 55 form both sides
x<45
so you have to take less than 45 seconds