The bar graph below shows number of N95, N98 and N99 Masks produced (in thousand) by Wild Craft Pvt,Ltd. In five months. What is the ratio between the number of N98 masks produced in January 2021 and April 2021 together to the number of N95 masks produced in January 2021, March 2021 and May 2021 together?

65 : 56

Number of N98 masks produced in January 2021 and April 2021 = 6.2 + 6.8 = 13

Number of N95 masks produced in January 2021, March 2021 and May 2021 together

= 2.5 + 3.2 + 5.5 = 11.2

Required ratio ,    13   :   11.2

                           65   :   56