Question

Lilly and Maggie decorated their windows with twinkle lights. Maggie used 51 more twinkle lights than Lilly. Fill in the box with the expression that represents the amount of twinkle lights Maggie used. Let m represent the amount of twinkle lights Maggie used and l represent the amount of twinkle lights Lilly used.If Lilly used 70 twinkle lights, how many twinkle lights did Maggie use?

Answer 1

We know that
m-------------------- > the amount of twinkle lights Maggie used
l--------------------- >  the amount of twinkle lights Lilly used
l=70
m=51+l
therefore
m=51+70=121
m=121

the answer is 121 (amount of twinkle lights Maggie used)