Question

The first month Tan had his new phone, he downloaded 5 apps on it. Six months later, he has 22 apps on his phone. What is the percent increase in the number of apps Tan has on his phone?

Answer 1

Answer:

1 step formula = Amount of change/original amount ×100

= amount of change=22-5=17

= 17/5×100%

=17×20%

=340%