The number of pomegranates Jenson bought in February was 40% more than in January. In March, he bought 70% less pomegranates than in February. If there were 348 less pomegranates in March than January, how many pomegranates did Jenson buy in February?

January	February	March
5x10	7x10
	10x7	3x7
50 u	70 u	21 u

100% + 40 = 140%
140% = ¹⁴⁰₁₀₀ = ⁷₅
February : January = 7 : 5 

100% - 70% = 30%
30% = ³⁰₁₀₀ = ³₁₀
March : February = 3 : 10

The number of pomegranates in February is repeated.  Make the number of pomegranates in February is the same.  LCM of 7 and 10 is 70.

Number of less pomegranates in March than January
= 50 u - 21 u
= 29 u

29 u = 348

1 u = 348 ÷ 29 = 12

Number of pomegranates that Jenson bought in February
= 70 u
= 70 x 12
= 840

Answer(s): 840