The owner of the fruit shop goes to the wholesale market to buy goods. The money he brings is exactly 40 kilograms if he buys type A fruit, 60 kilograms if he buys type B fruit, and 120 kilograms if he buys type C fruit. The weight of the three fruits he finally bought is the same, so how many kilograms of the three fruits can he buy with the money he brings?
水果店老板去批发市场进货，他所带的钱如果买甲种水果刚好买40千克，如果买乙种水果刚好买60千克，如果买丙种水果刚好买120千克．他最后买回的三种水果重量相同，那么他带的钱能买三种水果共多少千克．
<gadget id="calculator">1 / 40</gadget>
<output>1/40 = around 0.025</output>

<gadget id="calculator">1 / 60</gadget>
<output>1/60 = around 0.016667</output>

<gadget id="calculator">1 / 120</gadget>
<output>1/120 = around 0.008333</output>

<gadget id="calculator">(1/40) + (1/60) + (1/120)</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 / (1/20)</gadget>
<output>20</output>

<gadget id="calculator">20 * 3</gadget>
<output>60</output>

<result>60</result>