How many medical test kits were sold last year?

Question

at home medical test kits have increased in popularity in recent years. This year, 290 million test kits are expected to be sold. This represents a 116% increase from the number of kits that were sold last year. How many medical test kits were sold last year?

Answer 1

L + 1.16L = 290 million

2.16L = 290

L = 290/2.16 = 145/1.08 = 134.259259259...million

Last year's sales were about 134,259,259 rounded off to nearest integer