We already have our first value **42** and the second value **30**. Let's assume the unknown value is **Y** which answer we will find out.

As we have all the required values we need, Now we can put them in a simple mathematical formula as below:

STEP 1 Y = 4230

By multiplying both numerator and denominator by 100 we will get:

STEP 2 Y = 4230 × 100100 = 140100

STEP 3 Y = 140

Finally, we have found the value of Y which is 140 and that is our answer.

If you want to use a calculator to find **42 is what percent of 30**, simply enter **42 ÷ 30 × 100** and you will get your answer which is **140**

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Here is a calculator to solve percentage calculations such as 42 is what percent of 30. You can solve this type of calculation with your values by entering them into the calculator's fields, and click *'Calculate'* to get the result and explanation.

**Question:** Your Uncle, who loves to collect antique coins, collected 42 coins from his list of 30 coins. What percent of coins has he collected?

**Answer:** He collected 140 percent of the coins from his list.

**Question:** Your aunt has baked 30 cookies, and she gave you 42 to take home with you. What percent of the cookies did she give you?

**Answer:** 140 percent of the cookies.

Let's solve the equation for Y by first rewriting it as: **100% / 30 = Y% / 42**

Drop the percentage marks to simplify your calculations: **100 / 30 = Y / 42**

Multiply both sides by 42 to isolate Y on the right side of the equation: **42 ( 100 / 30 ) = Y**

Computing the left side, we get: **140 = Y**

This leaves us with our final answer: **42 is 140 percent of 30**

42 is 140 percent of 30 |

42.01 is 140.033 percent of 30 |

42.02 is 140.067 percent of 30 |

42.03 is 140.1 percent of 30 |

42.04 is 140.133 percent of 30 |

42.05 is 140.167 percent of 30 |

42.06 is 140.2 percent of 30 |

42.07 is 140.233 percent of 30 |

42.08 is 140.267 percent of 30 |

42.09 is 140.3 percent of 30 |

42.1 is 140.333 percent of 30 |

42.11 is 140.367 percent of 30 |

42.12 is 140.4 percent of 30 |

42.13 is 140.433 percent of 30 |

42.14 is 140.467 percent of 30 |

42.15 is 140.5 percent of 30 |

42.16 is 140.533 percent of 30 |

42.17 is 140.567 percent of 30 |

42.18 is 140.6 percent of 30 |

42.19 is 140.633 percent of 30 |

42.2 is 140.667 percent of 30 |

42.21 is 140.7 percent of 30 |

42.22 is 140.733 percent of 30 |

42.23 is 140.767 percent of 30 |

42.24 is 140.8 percent of 30 |

42.25 is 140.833 percent of 30 |

42.26 is 140.867 percent of 30 |

42.27 is 140.9 percent of 30 |

42.28 is 140.933 percent of 30 |

42.29 is 140.967 percent of 30 |

42.3 is 141 percent of 30 |

42.31 is 141.033 percent of 30 |

42.32 is 141.067 percent of 30 |

42.33 is 141.1 percent of 30 |

42.34 is 141.133 percent of 30 |

42.35 is 141.167 percent of 30 |

42.36 is 141.2 percent of 30 |

42.37 is 141.233 percent of 30 |

42.38 is 141.267 percent of 30 |

42.39 is 141.3 percent of 30 |

42.4 is 141.333 percent of 30 |

42.41 is 141.367 percent of 30 |

42.42 is 141.4 percent of 30 |

42.43 is 141.433 percent of 30 |

42.44 is 141.467 percent of 30 |

42.45 is 141.5 percent of 30 |

42.46 is 141.533 percent of 30 |

42.47 is 141.567 percent of 30 |

42.48 is 141.6 percent of 30 |

42.49 is 141.633 percent of 30 |

42.5 is 141.667 percent of 30 |

42.51 is 141.7 percent of 30 |

42.52 is 141.733 percent of 30 |

42.53 is 141.767 percent of 30 |

42.54 is 141.8 percent of 30 |

42.55 is 141.833 percent of 30 |

42.56 is 141.867 percent of 30 |

42.57 is 141.9 percent of 30 |

42.58 is 141.933 percent of 30 |

42.59 is 141.967 percent of 30 |

42.6 is 142 percent of 30 |

42.61 is 142.033 percent of 30 |

42.62 is 142.067 percent of 30 |

42.63 is 142.1 percent of 30 |

42.64 is 142.133 percent of 30 |

42.65 is 142.167 percent of 30 |

42.66 is 142.2 percent of 30 |

42.67 is 142.233 percent of 30 |

42.68 is 142.267 percent of 30 |

42.69 is 142.3 percent of 30 |

42.7 is 142.333 percent of 30 |

42.71 is 142.367 percent of 30 |

42.72 is 142.4 percent of 30 |

42.73 is 142.433 percent of 30 |

42.74 is 142.467 percent of 30 |

42.75 is 142.5 percent of 30 |

42.76 is 142.533 percent of 30 |

42.77 is 142.567 percent of 30 |

42.78 is 142.6 percent of 30 |

42.79 is 142.633 percent of 30 |

42.8 is 142.667 percent of 30 |

42.81 is 142.7 percent of 30 |

42.82 is 142.733 percent of 30 |

42.83 is 142.767 percent of 30 |

42.84 is 142.8 percent of 30 |

42.85 is 142.833 percent of 30 |

42.86 is 142.867 percent of 30 |

42.87 is 142.9 percent of 30 |

42.88 is 142.933 percent of 30 |

42.89 is 142.967 percent of 30 |

42.9 is 143 percent of 30 |

42.91 is 143.033 percent of 30 |

42.92 is 143.067 percent of 30 |

42.93 is 143.1 percent of 30 |

42.94 is 143.133 percent of 30 |

42.95 is 143.167 percent of 30 |

42.96 is 143.2 percent of 30 |

42.97 is 143.233 percent of 30 |

42.98 is 143.267 percent of 30 |

42.99 is 143.3 percent of 30 |