Find the ratio between average numbers of HP, ACER & SAMSUNG laptop sold by store in 2016 to average numbers of HP & TOSIBA laptop sold by store in 2017?

Total TOSIBA laptop sold by store in both the years is what percent less than total HP laptop sold by store in both the years?

Total SONY laptop sold by store in the year 2016 is 25% more than total ACER laptop sold by store in the year 2016 and total SONY laptop sold by store in the year 2017 is 140 more than total LENEVO laptop sold by store in 2017. Find decrement percentage in selling of SONY laptop in 2017 over the year 2016?

Total PANASONIC laptop sold by store in the year 2016 is 5 less than average numbers of LENEVO, HP, ACER and DELL laptop sold by store in 2016. Find total PANASONIC laptop sold by store in the year 2016 is what percent more than total SAMSUNG laptop sold by store in the year 2017?

Find difference between Total LENEVO, ACER & SAMSUNG laptop sold by store in the year 2016 and total HP, DELL & TOSIBA laptop sold by store in the year 2017? 

What will come in place of the question mark (?) in the following questions?(You are not expected to calculate exact values)

256.09 % of 449.91 + (11.98)³ = 36.09 % of ?

What will come in place of the question mark (?) in the following questions?(You are not expected to calculate exact values)

What will come in place of the question mark (?) in the following questions?(You are not expected to calculate exact values)

34.08 × ?³ + 25.03% of 3471.98 + (6.98)² = (32.99)² + 99.99

What will come in place of the question mark (?) in the following questions?(You are not expected to calculate exact values)

(16.21)² + (12.011)³ − ?² = 1199.99

What will come in place of the question mark (?) in the following questions?(You are not expected to calculate exact values)

568.09 + 234.01 − ? = (25.03)² +  ³√125.09