Question

Tom knows that in his school 10 out of every 85 students are left handed. There are 340 students in toms school. How many students in toms school are left handed

Answer 1

Number of left-handed students in his school s

46

Explanation:

As Tom has 10 out of every 85 students in his school as left-handed, this is equivalent to

10/85 = 2*5/17*5 = 2/17

i.e. 2 out of every 17 students in his school are left-handed.

Hence out of 391 students, number of left-handed students are

391 ×2/17= 23 × 17 ×2/17 =23 × (17) ×2/1(17) = 23 ×2 = 46

note whatever is in() is crossed out or cancelled out by another

Answer 2

40 students in Tom's school are left handed.

Explanation:

10/85

? /340

85 x 4= 340

10 x 4 = 40

Hope this helps! :))