Question

kevin has a ratio of 2 wrong answers to 7 correct answers on his math test. If he got 6 questions ewrong then how many did he answr correctly

Answer 1

Answer:

21 questions

Step-by-step explanation:

Given

$Wrong : Right = 2:7$

Required

Determine the number of correct answers if he answered 6 wrongly

The required ratio can be represented as:

$Wrong : Right = 6 : X$

Where X represents number of right answers for 6 wrong answers.

Next, we equate both ratios:

$6:X = 2:7$

Convert to fraction

$\frac{6}{X} = \frac{2}{7}$

Cross Multiply

$X * 2 = 6 * 7$

$2X = 42$

Divide through by 2

$X = 21$

Hence, he answered 21 correctly