Question

After a few mathletes join the team, the team is able to solve 40% more problems per session. Of the team can solve 42 problems per session now, how many problem were they able to solve before the new mathletes joined? (Please EXPLAIN how you got it ;)

Answer 1

Answer:

• 30 problems

Step-by-step explanation:

Let the number of the problems the team could solve before is x.

Then we have:

• x + 40% = 42
• 1.4x = 42
• x = 42/1.4
• x = 30

They were able to solve 30 problems before the new mathletes joined

Answer 2

Answer:

$\tt{}x = 30$

Step-by-step explanation:

$\tt{}x + 40\% = 42$

$\tt{}1.4x = 42$

$\tt{}x = \frac{42}{1.4}$

$\tt{}x = 30$

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