Question

Question #626a4

Answer 1

You can do this by ratios

Input: `100%hArrx`
Used: `95%hArr1000000J=1 MJ`

`(xMJ)/(100%)=(1MJ)/(95%)->x*95=100*1->x~~1.053MJ`

Extra:
We used the cross-product rule here:

`A/B=C/D->A*D=B*C`