Question

During 2006, a swimming lesson at a particular school lasted 45 minutes.
(a) In 2007, the lesson time will be 50 minutes. Find the increase in the lesson time from 2006 t0 2007 as a percentage of the lesson time in 2006.
(b) The lesson time in 2007 will be 25% more tan it was in 2005. Find how long the lesson lasted in 2005.
(c) At present, James takes 240 seconds to swim 100 meters. In a year's time,
he would have improved his swimming time by 25%. Calculate the time he
will take to swim 100 meters in a year's time.
(d) Robert, at present, also takes 240 seconds to swim 100 meters. In a year's
time, he would have increased his swimming speed by 25%. Calculate the time he will take to swim 100 meters in a year's time.
(e) Who will be the faster swimmer, James or Robert, in a year's time?​

Answer 1

Answer:

Step-by-step explanation:

E

robert

Answer 2

Answer

a) 100% × (50 - 45) ÷ 45 = 100% × 5/45 = 11.11%

b) 40

c) 180

d) 192

e) James